Differences between revisions 4 and 11 (spanning 7 versions)

[:PiraScheme#Mechanics: Table of Mechanics]

[:Measurement: Mechanics (1A): Measurement]

[:MotionIn2D: Mechanics (1D): Motion in Two Dimensions]

[:Demonstrations:Lecture Demonstrations]

Motion in One Dimension

PIRA classification 1C

Grayed Demos are either not available or haven't been built yet

1C10. Velocity

PIRA #	Demonstration Name	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
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
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.
1C10.30	Approaching instantaneous velocity	A ball breaks two foils to start and stop a timer. Change spacing of gates to approach instantaneous velocity.
1C10.32	Strobed Disc	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 teaches terminal velocity. Obtaining a slow constant velocity that can be measured.

1C20. Uniform Acceleration

PIRA #	Demonstration Name	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.
1C20.17	Heavy and Light ball drop	Try asking, at what height must the light ball be dropped at so that it hits the floor at the same time as the heavy ball.
1C20.20	Equal Time & Equal Distance	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).
1C20.30	Inclined Air Track	Place a risers under one end of an air track and use either; The Pasco interface with echo censer and computer to show velocity graph or Photogate timers to measure the velocity at two points.
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

PIRA #	Demonstration Name	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.
1C30.41	Falling Drops	A strobe illuminates water dripping from a faucet at an uniform rate.
1C30.46	"videostrobe" with falling drops	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.
1C30.55	Catch a Meter Stick, Reaction time	Drop a meter stick and have a student catch it. Distance can be converted to reaction time.
1C30.55	Catch a Dollar, Reaction time	Have a student try to catch a dollar starting with the fingers at the midpoint.
1C30.55	reaction time falling meter stick	Have a student catch a falling meter stick and relate the distance dropped to the reaction time.
1C30.63	pendulum timed free fall	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.

[:Demonstrations:Demonstrations]

[:Instructional:Home]

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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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= 1C10. Velocity =
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-'''1C10. Velocity'''
||<:10%>'''DCS #'''||<:>'''DEMONSTRATION NAME'''||<:60%>'''ABSTRACT'''||
+||<: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 	|| ||
||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 ||
||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.||
||1C10.30||	Approaching instantaneous velocity||	A ball breaks two foils to start and stop a timer. Change spacing of gates to approach instantaneous velocity.||
||1C10.32||	Strobed Disc||	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 teaches 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. ||
||1C20.17||	Heavy and Light ball drop||	Try asking, at what height must the light ball be dropped at so that it hits the floor at the same time as the heavy ball.||
||1C20.20||	Equal Time & Equal Distance||	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).||
||1C20.30||	Inclined Air Track||	Place a risers under one end of an air track and use either; The Pasco interface with echo censer and computer to show velocity graph or Photogate timers to measure the velocity at two points.||
||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'''||
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 ||1C30.55||	Catch a Meter Stick, Reaction time|| 	Drop a meter stick and have a student catch it. Distance can be converted to reaction time.||
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-'''1C20. Uniform Acceleration'''
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-'''1C30. Measuring g'''

fw: Diff for "MotionIn1D"

Motion in One Dimension

1C10. Velocity

1C20. Uniform Acceleration

1C30. Measuring g