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||<25% style="&quot; &amp; quot; &amp; amp; quot;text-align:center&amp; amp; quot; &amp; quot; &quot; ">[[PiraScheme#Mechanics|Table of Mechanics]] ||<25% style="&quot; &amp; quot; &amp; amp; quot;text-align:center&amp; amp; quot; &amp; quot; &quot; ">[[Measurement|Mechanics (1A): Measurement]] ||<25% style="&quot; &amp; quot; &amp; amp; quot;text-align:center&amp; amp; quot; &amp; quot; &quot; ">[[MotionIn2D|Mechanics (1D): Motion in Two Dimensions]] ||<25% style="&quot; &amp; quot; &amp; amp; quot;text-align:center&amp; amp; quot; &amp; quot; &quot; ">[[Demonstrations|Lecture Demonstrations]] ||
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||<:25%>[:PiraScheme#Mechanics: Table of Mechanics]||<:25%>[:Measurement: Mechanics (1A): Measurement]||<:25%>[:MotionIn2D: Mechanics (1D): Motion in Two Dimensions]||<:25%>[:Demonstrations:Lecture Demonstrations]||
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''PIRA classification 1C''
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''PIRA classification 1C''
||<#dddddd> Grayed Demos are either not available or haven't been built yet||
= 1C10. Velocity =

||<:10%>'''PIRA #'''||<:>'''Demonstration Name'''||<:60%>'''Abstract'''||
||1C10.10|| Bulldozer or Cart on moving sheet|| The bulldozer or cart on a moving sheet moves in the same or opposite direction as the moving sheet, not at a angle, to show addition and subtraction of velocities.||
||1C10.20|| PASCO dynamics cart  || A Pasco cart on the Pasco track.||
||1C10.21|| Block of Wood on a String|| With a stopwatch, measure the time it takes to pull it  across the table at constant velocity in front of a meter stick.||
||1C10.25|| Constant Velocity (Airtrack & Glider)|| Dots are superimposed on the screen every half second to mark the position of the air glider.||
||1C10.27|| Velocity -air track and glider|| Level air track with the Pasco echo system and computer to show several velocity ||
||<#dddddd> 1C10.30||<#dddddd> Approaching instantaneous velocity||<#dddddd> An air cart is given a reproducible velocity by a solenoid kicker. Flags of decreasing length interrupt a photo timer.||
||<#dddddd>1C10.32||<#dddddd> Strobed Disc||<#dddddd> Look at a fluorescent spot on a 1725 RPM disc with a stroboscope at multiples of the frequency to demonstrate the limiting process.||
||1C10.51|| Terminal Velocity|| A Marble is droped in to a cylener of Glycerine which reaches terminal velocity. Obtaining a slow constant velocity that can be measured.||

= 1C20. Uniform Acceleration =

||<:10%>'''PIRA #'''||<:>'''Demonstration Name'''||<:60%>'''Abstract'''||
||1C20.10|| Penny and Cotton (guinea and feather)|| Invert a large glass tube that contains a penny and a small cotton ball within; Invert first with air and again when evacuated.||
||1C20.15|| Drop wooden and lead ball of same size||  Show that all objects, heavy and light, when dropped simultaneously have the same acceleration and that they hit the ground at the same time. ||
||<#dddddd>1C20.20||<#dddddd> Equal Time & Equal Distance||<#dddddd> Hang on ceiling two long strings with balls - one with equal distance intervals(1,4,8,12,16)? and the other with equal time intervals(1,4,9,16).||
||1C20.35|| Inclined Air Track|| Using the Pasco interface with echo censer and computer to show the acceleration, velocity, or displacement graphs as a function of time is obtained for a cart on an inclined air track as it accelerates down and rebounds. (Pasco mass cars and track can also be used here)||
||1C20.40|| Acceleration "Al" track|| Using the long aluminum inclined track and a metronome.  A lager steel ball is released and aloud to accelerate down the track. The metronome click off at distance intervals(1,4,8,12,16) down the track.||
||1C20.41|| Acceleration "Al" track|| A ball rolls down a sloped track onto a level track. As a  metronome clicks off, such that the ball passes the marked distance.||
||1C20.50|| Duff's plane|| A ball leaves a trail as it oscillates back and forth while rolling down a chalk covered trough.||

= 1C30. Measuring g =

||<:10%>'''PIRA #'''||<:>'''Demonstration Name'''||<:60%>'''Abstract'''||
||1C30.10||free fall timer||A ball is timed as it drops .5m, 1m, 1.5m, or 2m.||
||1C30.16|| dropping balls|| A ball is released by an electromagnet and a clock started. The catcher stops the clock and can be set at different heights.||
||1C30.15|| Free Fall Apparatus|| A table top free fall apparatus with push button sparker and using spark tape. Different weight can be used on the leading end of the tape.||
||<#dddddd>1C30.46||<#dddddd> "videostrobe" with falling drops||<#dddddd> Use the 60 Hz refresh rate of a video monitor to strobe falling drops by adjusting the rate to 60 Hz and having the stream fall past the screen.||
||1C30.55a|| Catch a Meter Stick, Reaction time|| Drop a meter stick and have a student catch it. Distance can be converted to reaction time.||
||1C30.55b|| Catch a Dollar, Reaction time|| Have a student try to catch a dollar starting with the fingers at the midpoint.||
||<#dddddd>1C30.63||<#dddddd> pendulum timed free fall||<#dddddd> A pendulum released from the side hits a ball dropped from the height that gives a fall time equal to a quarter period of the pendulum.||
||1C30.66|| many bounce method|| Time a bouncing ball for many bounces and determine g using the coefficient of restitution.||
26 Demonstrations listed of which 7 are grayed out.
||<#dddddd>Grayed out demonstrations are '''not''' available or within our archive and are under consideration to be added. ||
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[:Demonstrations:Demonstrations]
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[:Instructional:Home] <<Anchor(Velocity)>>

= 1C05. Displacement =
||<10% style="&quot; &amp; quot; &amp; amp; quot;text-align:center&amp; amp; quot; &amp; quot; &quot; ">'''PIRA #''' ||<style="&quot; &amp; quot; &amp; amp; quot;text-align:center&amp; amp; quot; &amp; quot; &quot;">'''Demonstration Name''' ||<style="&quot; &amp; quot; &amp; amp; quot;text-align:center&amp; amp; quot; &amp; quot; &quot;">'''Subsets''' ||<60% style="&quot; &amp; quot; &amp; amp; quot;text-align:center&amp; amp; quot; &amp; quot; &quot; ">'''Abstract''' ||
||1C05.10 ||Stopping Motion || ||Stopping the motion of a moving cart on a track with the use of strobe lights. (eye-blink stop motion) ||


<<Anchor(Velocity)>>

= 1C10. Velocity =
||<10% style="&quot; &amp; quot; &amp; amp; quot;text-align:center&amp; amp; quot; &amp; quot; &quot; ">'''PIRA #''' ||<style="&quot; &amp; quot; &amp; amp; quot;text-align:center&amp; amp; quot; &amp; quot; &quot;">'''Demonstration Name''' ||<style="&quot; &amp; quot; &amp; amp; quot;text-align:center&amp; amp; quot; &amp; quot; &quot;">'''Subsets''' ||<60% style="&quot; &amp; quot; &amp; amp; quot;text-align:center&amp; amp; quot; &amp; quot; &quot; ">'''Abstract''' ||
||<10% style="&quot; &amp; quot; &amp; amp; quot;text-align:center&amp; amp; quot; &amp; quot; &quot; ">1C10.05 ||<style="&quot; &amp; quot; &amp; amp; quot;text-align:center&amp; amp; quot; &amp; quot; &quot;">Ultrasonic Ranger and Student ||<style="&quot; &amp; quot; &amp; amp; quot;text-align:center&amp; amp; quot; &amp; quot; &quot;">pira200 ||<60% style="&quot; &amp; quot; &amp; amp; quot;text-align:center&amp; amp; quot; &amp; quot; &quot; ">A student walks toward and away from a sonic ranger. The computer displays graphs of position, velocity, and acceleration vs. time. ||
||1C10.10 or 1E10.10 ||[[Bulldozer_on_Moving_Sheet|Bulldozer on Moving Sheet]] || ||A bulldozer powered by an electric motor moves in the same or opposite direction as the sheet which is moves beneath it to show Relative Motion in the content of addition and subtraction of velocities. ||
||1C10.20 ||[[VelocityAirTrack|Constant Velocity - PASCO Dynamic Cart]] ||pira200 ||A PASCO cart on the PASCO track is given an initial velocity which should remain constant. Note: our PASCO setup has high friction so does not work as well as it should. See [[VelocityAirTrack|1C10.27]] for a better variation. ||
||1C10.21 ||[[Block_of_Wood_on_a_String|Block of Wood on a String]] || ||A wood block with attached string is pulled horizontally across a table at constant velocity in front of a meter stick. The time interval of the displacement can be measured using a stopwatch so that the velocity can be calculated. ||
||<#dddddd>1C10.25 ||<#dddddd>Constant Velocity (Air Track & Glider) ||<#dddddd> ||<#dddddd>Dots are superimposed on the screen every half second to mark the position of the air glider. ||
||1C10.27 ||[[VelocityAirTrack|Constant Velocity Glider on Air Track]] || ||A glider on a level air track is pushed giving it a velocity which remains roughly constant on the low-friction surface. A timer together with a known displacement can be used to measure the velocity. ||
||<#dddddd>1C10.30 ||<#dddddd>Approaching Instantaneous Velocity ||<#dddddd> ||<#dddddd>An air cart is given a reproducible velocity by a solenoid kicker. Flags of decreasing length interrupt a photo timer. ||
||<#dddddd>1C10.32 ||<#dddddd>Strobed Disc ||<#dddddd> ||<#dddddd>Look at a fluorescent spot on a 1725rpm disc with a stroboscope at multiples of the frequency to demonstrate the limiting process. ||
||1C10.40 ||[[AlInclinedPlaneCV|Aluminum Inclined Plane, Constant Velocity]] || ||A large steel ball accelerates down the inclined track and onto a flat track as a metronome ticks at constant time intervals. [[AlInclinedPlaneAcc|Analogous to 1C20.40]] and sometimes used at the same time. ||
||2C30.50 1C10.51 ||[[GlycerinViscosity|Terminal Velocity With Water, Glycerin, & Marbles]] || ||Two identical marbles are dropped simultaneously into separate graduated cylinders, one filled with glycerine and the other with water. The marble dropped in glycerine will quickly reach terminal velocity, obtaining a slow and constant velocity that can be measured. ||


<<Anchor(UniformAcceleration)>>

= 1C20. Uniform Acceleration =
||<10% style="&quot; &amp; quot; &amp; amp; quot;text-align:center&amp; amp; quot; &amp; quot; &quot; ">'''PIRA #''' ||<style="&quot; &amp; quot; &amp; amp; quot;text-align:center&amp; amp; quot; &amp; quot; &quot;">'''Demonstration Name''' ||<style="&quot; &amp; quot; &amp; amp; quot;text-align:center&amp; amp; quot; &amp; quot; &quot;">'''Subsets''' ||<60% style="&quot; &amp; quot; &amp; amp; quot;text-align:center&amp; amp; quot; &amp; quot; &quot; ">'''Abstract''' ||
||1C20.10 ||[[PennyCotton|Penny and Cotton]] (AKA Guinea and Feather) ||pira200||Invert a large glass tube that contains a penny and a small cotton ball. Invert first with air and again when evacuated. ||
||1C20.15 ||Drop Wooden and Lead Balls || ||Show that the two balls, one substantially heavier than the other, when dropped simultaneously have the same acceleration and hit the ground at the same time. The two balls are the same size. ||
||1C20.16 ||[[BallPaperCottonBallDrop|Ball, Paper, and Cotton Ball Drop]] || ||A rubber ball, a cotton ball, a sheet of paper, and a crumpled sheet of paper are simultaneously dropped from the same height. Due to the different geometric profiles of each dropped object, the drag force on each will be different. ||
||<#dddddd>1C20.20 ||<#dddddd>Equal Time & Equal Distance ||<#dddddd> ||<#dddddd>Two separate ropes strung through tennis balls are hung from the ceiling. On the first rope the tennis balls are spaced equidistantly (ex. every 3 feet). On the second rope the balls are spaced in a manner which represents the position of a falling ball at equal time intervals. (ex. every half second i.e. one ball at the top, one ball 4 ft below it, another 16 ft from the top, another 36 ft from the top, etc.) See [[http://physicslearning.colorado.edu/PIRA/Sutton/PARTI.pdf#pagemode=none&page=1|Sutton M-84]]. ||
||1C20.35 ||Inclined Air Track || ||Using the PASCO interface, the echo censor and a computer to show the acceleration, velocity, or displacement graphs vs. time. The data is obtained from a cart on an inclined air track as it accelerates down and rebounds. (PASCO mass cars and track can also be used here.) ||
||1C20.40 ||[[AlInclinedPlaneAcc|Aluminum Inclined Plane, Constant Acceleration]] || ||A large steel ball accelerates down the inclined track as a metronome ticks at constant time intervals. [[AlInclinedPlaneCV|Analogous to 1C10.40]] and sometimes used at the same time. ||
||<#dddddd>1C20.50 ||<#dddddd>Duff's Plane ||<#dddddd> ||<#dddddd>A ball leaves a trail as it oscillates back and forth while rolling down a chalk covered trough. See [[http://physicslearning.colorado.edu/PIRA/Sutton/PARTI.pdf#pagemode=none&page=1|Sutton M-76]]. ||
||1C20.60 ||[[VerticalProjectileLauncher|Vertical Projectile Launcher]] || ||A projectile is launched vertically from a risen platform relative to the ground. The projectile will reach a maximum height, stop, then fall the the ground reaching its greatest speed just before impact. ||


<<Anchor(Measuringg)>>

= 1C30. Measuring g =
||<10% style="&quot; &amp; quot; &amp; amp; quot;text-align:center&amp; amp; quot; &amp; quot; &quot; ">'''PIRA #''' ||<style="&quot; &amp; quot; &amp; amp; quot;text-align:center&amp; amp; quot; &amp; quot; &quot;">'''Demonstration Name''' ||<style="&quot; &amp; quot; &amp; amp; quot;text-align:center&amp; amp; quot; &amp; quot; &quot;">'''Subsets''' ||<60% style="&quot; &amp; quot; &amp; amp; quot;text-align:center&amp; amp; quot; &amp; quot; &quot; ">'''Abstract''' ||
||1C30.10 ||Free Fall Timer ||pira200||Drop a ball and time the fall. ||
||1C30.16 ||Free Fall Ball Drop || ||A ball is released by an electromagnet and a clock started. The catcher stops the clock, thus measuring the duration of the fall. ||
||1C30.15 ||Free Fall Spark Apparatus || ||A bob falls along a length spark tape to show the position of the bob at constant time intervals. ||
||<#dddddd>1C30.46 ||<#dddddd>Video Strobe Water Drop Gravitometer ||<#dddddd> ||<#dddddd>Use the 60 Hz refresh rate of a video monitor to strobe falling drops by adjusting the rate to 60 Hz and having the stream fall past the screen. See [[http://scitation.aip.org/getpdf/servlet/GetPDFServlet?filetype=pdf&id=PHTEAH000028000002000108000001&idtype=cvips&doi=10.1119/1.2342956&prog=normal|TPT 28(2), 108]]. ||
||1C30.55a ||[[Reaction_Time|Catch a Meter Stick, Reaction time]] || ||Drop a meter stick and have a student catch it. Distance can be converted to reaction time. ||
||1C30.55b ||[[Reaction_Time|Catch a Dollar, Reaction time]] || ||Hold a dollar bill vertically and have the student put his thumb and index finger on either side of the bill at the midpoint. Drop the dollar and see that the student will likely not be able to react in the short time it takes for the dollar to fall through his fingers. See [[http://scitation.aip.org/getpdf/servlet/GetPDFServlet?filetype=pdf&id=PHTEAH000014000003000177000001&idtype=cvips&doi=10.1119/1.2339346&prog=normal|TPT 14(3), 177]]. ||
||<#dddddd>1C30.63 ||<#dddddd>Pendulum Timed Free Fall ||<#dddddd> ||<#dddddd>A pendulum released from the side hits a ball dropped from the specific height that gives a fall time equal to a quarter period of the pendulum. See [[http://physicslearning.colorado.edu/PIRA/Sutton/PARTI.pdf#pagemode=none&page=1|Sutton]] M-86. ||
||1C30.66 ||Many Bounce Method || ||Time a bouncing ball for many bounces and determine g using the coefficient of restitution. See [[http://scitation.aip.org/getpdf/servlet/GetPDFServlet?filetype=pdf&id=AJPIAS000055000001000059000001&idtype=cvips&doi=10.1119/1.14971&prog=normal|AJP 55(1), 59]]. ||


||<25% style="&quot; &amp; quot; &amp; amp; quot;text-align:center&amp; amp; quot; &amp; quot; &quot; ">[[PiraScheme#Mechanics|Table of Mechanics]] ||<25% style="&quot; &amp; quot; &amp; amp; quot;text-align:center&amp; amp; quot; &amp; quot; &quot; ">[[Measurement|Mechanics (1A): Measurement]] ||<25% style="&quot; &amp; quot; &amp; amp; quot;text-align:center&amp; amp; quot; &amp; quot; &quot; ">[[MotionIn2D|Mechanics (1D): Motion in Two Dimensions]] ||<25% style="&quot; &amp; quot; &amp; amp; quot;text-align:center&amp; amp; quot; &amp; quot; &quot; ">[[Demonstrations|Lecture Demonstrations]] ||


[[Demonstrations]]

[[Instructional|Home]]

Table of Mechanics

Mechanics (1A): Measurement

Mechanics (1D): Motion in Two Dimensions

Lecture Demonstrations

Motion in One Dimension

PIRA classification 1C

26 Demonstrations listed of which 7 are grayed out.

Grayed out demonstrations are not available or within our archive and are under consideration to be added.

1C05. Displacement

PIRA #

Demonstration Name

Subsets

Abstract

1C05.10

Stopping Motion

Stopping the motion of a moving cart on a track with the use of strobe lights. (eye-blink stop motion)

1C10. Velocity

PIRA #

Demonstration Name

Subsets

Abstract

1C10.05

Ultrasonic Ranger and Student

pira200

A student walks toward and away from a sonic ranger. The computer displays graphs of position, velocity, and acceleration vs. time.

1C10.10 or 1E10.10

Bulldozer on Moving Sheet

A bulldozer powered by an electric motor moves in the same or opposite direction as the sheet which is moves beneath it to show Relative Motion in the content of addition and subtraction of velocities.

1C10.20

Constant Velocity - PASCO Dynamic Cart

pira200

A PASCO cart on the PASCO track is given an initial velocity which should remain constant. Note: our PASCO setup has high friction so does not work as well as it should. See 1C10.27 for a better variation.

1C10.21

Block of Wood on a String

A wood block with attached string is pulled horizontally across a table at constant velocity in front of a meter stick. The time interval of the displacement can be measured using a stopwatch so that the velocity can be calculated.

1C10.25

Constant Velocity (Air Track & Glider)

Dots are superimposed on the screen every half second to mark the position of the air glider.

1C10.27

Constant Velocity Glider on Air Track

A glider on a level air track is pushed giving it a velocity which remains roughly constant on the low-friction surface. A timer together with a known displacement can be used to measure the velocity.

1C10.30

Approaching Instantaneous Velocity

An air cart is given a reproducible velocity by a solenoid kicker. Flags of decreasing length interrupt a photo timer.

1C10.32

Strobed Disc

Look at a fluorescent spot on a 1725rpm disc with a stroboscope at multiples of the frequency to demonstrate the limiting process.

1C10.40

Aluminum Inclined Plane, Constant Velocity

A large steel ball accelerates down the inclined track and onto a flat track as a metronome ticks at constant time intervals. Analogous to 1C20.40 and sometimes used at the same time.

2C30.50 1C10.51

Terminal Velocity With Water, Glycerin, & Marbles

Two identical marbles are dropped simultaneously into separate graduated cylinders, one filled with glycerine and the other with water. The marble dropped in glycerine will quickly reach terminal velocity, obtaining a slow and constant velocity that can be measured.

1C20. Uniform Acceleration

PIRA #

Demonstration Name

Subsets

Abstract

1C20.10

Penny and Cotton (AKA Guinea and Feather)

pira200

Invert a large glass tube that contains a penny and a small cotton ball. Invert first with air and again when evacuated.

1C20.15

Drop Wooden and Lead Balls

Show that the two balls, one substantially heavier than the other, when dropped simultaneously have the same acceleration and hit the ground at the same time. The two balls are the same size.

1C20.16

Ball, Paper, and Cotton Ball Drop

A rubber ball, a cotton ball, a sheet of paper, and a crumpled sheet of paper are simultaneously dropped from the same height. Due to the different geometric profiles of each dropped object, the drag force on each will be different.

1C20.20

Equal Time & Equal Distance

Two separate ropes strung through tennis balls are hung from the ceiling. On the first rope the tennis balls are spaced equidistantly (ex. every 3 feet). On the second rope the balls are spaced in a manner which represents the position of a falling ball at equal time intervals. (ex. every half second i.e. one ball at the top, one ball 4 ft below it, another 16 ft from the top, another 36 ft from the top, etc.) See Sutton M-84.

1C20.35

Inclined Air Track

Using the PASCO interface, the echo censor and a computer to show the acceleration, velocity, or displacement graphs vs. time. The data is obtained from a cart on an inclined air track as it accelerates down and rebounds. (PASCO mass cars and track can also be used here.)

1C20.40

Aluminum Inclined Plane, Constant Acceleration

A large steel ball accelerates down the inclined track as a metronome ticks at constant time intervals. Analogous to 1C10.40 and sometimes used at the same time.

1C20.50

Duff's Plane

A ball leaves a trail as it oscillates back and forth while rolling down a chalk covered trough. See Sutton M-76.

1C20.60

Vertical Projectile Launcher

A projectile is launched vertically from a risen platform relative to the ground. The projectile will reach a maximum height, stop, then fall the the ground reaching its greatest speed just before impact.

1C30. Measuring g

PIRA #

Demonstration Name

Subsets

Abstract

1C30.10

Free Fall Timer

pira200

Drop a ball and time the fall.

1C30.16

Free Fall Ball Drop

A ball is released by an electromagnet and a clock started. The catcher stops the clock, thus measuring the duration of the fall.

1C30.15

Free Fall Spark Apparatus

A bob falls along a length spark tape to show the position of the bob at constant time intervals.

1C30.46

Video Strobe Water Drop Gravitometer

Use the 60 Hz refresh rate of a video monitor to strobe falling drops by adjusting the rate to 60 Hz and having the stream fall past the screen. See TPT 28(2), 108.

1C30.55a

Catch a Meter Stick, Reaction time

Drop a meter stick and have a student catch it. Distance can be converted to reaction time.

1C30.55b

Catch a Dollar, Reaction time

Hold a dollar bill vertically and have the student put his thumb and index finger on either side of the bill at the midpoint. Drop the dollar and see that the student will likely not be able to react in the short time it takes for the dollar to fall through his fingers. See TPT 14(3), 177.

1C30.63

Pendulum Timed Free Fall

A pendulum released from the side hits a ball dropped from the specific height that gives a fall time equal to a quarter period of the pendulum. See Sutton M-86.

1C30.66

Many Bounce Method

Time a bouncing ball for many bounces and determine g using the coefficient of restitution. See AJP 55(1), 59.

Table of Mechanics

Mechanics (1A): Measurement

Mechanics (1D): Motion in Two Dimensions

Lecture Demonstrations

Demonstrations

Home

fw: MotionIn1D (last edited 2018-07-18 16:18:18 by srnarf)