Differences between revisions 2 and 10 (spanning 8 versions)

[:PiraScheme#Mechanics: Table of Mechanics]

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

[:Newtons1STLaw: Mechanics (1F): Newton's First Law]

[:Demonstrations:Lecture Demonstrations]

Relative Motion

PIRA classification 1E

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

1E10. Moving Reference Frames

PIRA #	Demonstration Name	Abstract
1E10.10	bull dozer on moving sheet (2D)	The bulldozer moves across a sheet moving at half the speed of the bulldozer or at the same speed.
1E10.15	moving blackboard	Using a large movable reference frame on wheels and a walking student, equations of relative speed can be deduced by non science majors.
1E10.20	Frames of Reference film	The classic film available on video disc permits use of selective parts.
1E10.31	stick on the caterpillar	A small stick placed on the top tread of a toy caterpillar moves twice as fast as the toy.
1E10.41	inertial reference frames	Two X-Y axes, one on a moving cart, and "cord" vectors are painted with fluorescent paint and viewed in black light.

1E20. Rotating Reference Frames

PIRA #	Demonstration Name	Abstract
1E20.10	Foucault pendulum	A ceiling mounted pendulum swings freely. The change in path is noted at the end of the class period.
1E20.11	short Foucault pendulum	A 70 cm pendulum with a method of nullifying the precession due to ellipticity.
1E20.19	general and historical article	Some discussion of a current murder novel, some history of Foucault's work, etc.
1E20.20	Foucault pendulum model	A pendulum is mounted on a rotating turntable.
1E20.21	rotating frame	A monkey puppet sits on a rotating reference frame to help the student visualize a non-inertial frame.
1E20.22	Foucault pendulum model	Sit on a rotating chair with a table on your lab. A pendulum releasing ink marks a clear pattern on the paper.
1E20.26	geometric model	A geometrical model helps correct some common misconceptions about the plane of oscillation of the Foucault pendulum.
1E20.27	Foucault pendulum	Excellent diagram explaining the variation of rotation of the Foucault pendulum with latitude
1E20.28	Foucault pendulum precession	Derivation of the Foucault pendulum period shows that no correction factor is needed for (1 m) lengths. Contradicts C.L.Strong, Sci.Am. 210,136 (1964).
1E20.30	Foucault pendulum latitude model	A vibrating elastic steel wire pendulum demonstrates how the rotation of the plane of oscillation depends on the latitude.
1E20.40	Theory and two demonstrations	The concept of a locally inertial frame is used to study motion in accelerated frames. Two demonstrations are presented.
1E20.50	rotating room	Design for a rotating room that seats four at a table, and has four possible speeds.
1E20.50	catch on a rotating platform	Students try to play catch on a large rotating system. Other possibilities for the apparatus are discussed.
1E20.51	rotating coordinate frame visualizer	Experiments performed on a rotating frame are projected onto a screen through a rotating dove prism. Centrifugal force, Coriolis force, angular acceleration, cyclones and anticyclones, Foucault pendulum, etc.

1E30. Coriolis Effect

PIRA #	Demonstration Name	Abstract
1E30.10	draw the Coriolis curve - vertical	Mount a rotating disk vertically, drive a pen on a cart at constant velocity in front of the disk. The speeds of the disk and cart are variable.
1E30.13	Coriolis machine	A clear plastic disk is placed over a inertial reference frame marked with a constant velocity path. Draw marks on the plastic disk while turning through equal angles.
1E30.20	Coriolis gun	A clamped dart gun is fired by an instructor sitting on a revolving chair into a target board.
1E30.20	Coriolis gun	A spring gun at the center of a rotating table fires into a target at the edge.
1E30.21	Coriolis	Go to a merry-go-round and walk on it. You will feel a very strange "force".
1E30.24	spinning Coriolis globe	A ball on a string is threaded through the pole of a spinning globe. Pull on the string and the ball moves to higher latitudes and crosses the latitude lines.
1E30.26	Coriolis dish and TV	A ball oscillates in a spherical dish at rest, and follows various curved paths when the dish is rotated at different speeds. A TV camera is mounted to the rotating frame. More.
1E30.27	Coriolis rotating platform and tv	A puck is launched on a rotating platform and the motion is followed with a TV
1E30.28	<#dddddd>Coriolis effect	Roll a ball across a slowly rotating turntable.
1E30.30	leaky bucket on turntable	A can with a hole is mounted above a rotating table. As the table turns, the stream of water is deflected.
1E30.32	drop ball on turntable	A mass falls on a disc first while it is rotating and then when it is stationary. Difference in point of impact is noted.
1E30.33	Coriolis trajectory	A ball describing an arc is released first in a stationary coordination system and then in a rotating system.
1E30.35	rotating water flow table	Food coloring used to mark flow is introduced at the edges of a circular rotating tank with a center drain hole. A rotating overhead TV camera allows motion in the rotating frame to be viewed.

[:Demonstrations:Demonstrations]

[:Instructional:Home]

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-Deletions are marked like this.
+Additions are marked like this.
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+||<:25%>[:PiraScheme#Mechanics: Table of Mechanics]||<:25%>[:MotionIn2D: Mechanics (1D): Motion in Two Dimensions]||<:25%>[:Newtons1STLaw: Mechanics (1F): Newton's First Law]||<:25%>[:Demonstrations:Lecture Demonstrations]||
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+||<#dddddd> Grayed Demos are either not available or haven't been built yet||
= 1E10. Moving Reference Frames =
-Line 7:
+Line 11:
-'''1E10. Moving Reference Frames '''
-Line 9:
+Line 12:
-||1E10.10||	crossing the river||	Pull a sheet of wrapping paper along the lecture bench while a toy wind up tractor crosses the paper.||
1E10.10	crossing the river	A long sheet of paper (river) is pulled along the table by winding on a motorized shaft. A motorized boat is set to cross the river. Marking pens trace the paths.
1E10.10	crossing the river	A wind up toy is placed on a sheet of cardboard that is pulled along the table.
1E10.10	crossing the river	A small mechanical toy moves across a rug which is pulled down the lecture table.
1E10.10	bull dozer on moving sheet (2D)	The bulldozer moves across a sheet moving at half the speed of the bulldozer or at the same speed.
1E10.11	toy tractor drive	On using toy tractors in kinematics demonstrations.
1E10.15	moving blackboard	Using a large movable reference frame on wheels and a walking student, equations of relative speed can be deduced by non science majors.
1E10.20	Frames of Reference film	The classic film available on video disc permits use of selective parts.
1E10.22	photographing relative velocity	Toy bulldozers, blinkies, and a camera give a photographic record of relative velocities.
1E10.23	Galilean relativity	A Polaroid camera and blinky, each on a cart pushed by a toy caterpillar, show the various cases of relative motion.
1E10.31	stick on the caterpiller	A small stick placed on the top tread of a toy caterpillar moves twice as fast as the toy.
1E10.41	inertial reference frames	Two X-Y axes, one on a moving cart, and "cord" vectors are painted with fluorescent paint and viewed in black light.
1E10.41	inertial reference frames	Complicated. Look it up.
+||1E10.10||	bull dozer on moving sheet (2D)||	The bulldozer moves across a sheet moving at half the speed of the bulldozer or at the same speed.||
||1E10.15||	moving blackboard||	Using a large movable reference frame on wheels and a walking student, equations of relative speed can be deduced by non science majors.||
||1E10.20||	Frames of Reference film||	The classic film available on video disc permits use of selective parts.||
||1E10.31||	stick on the caterpillar||	A small stick placed on the top tread of a toy caterpillar moves twice as fast as the toy.||
||<#dddddd>1E10.41||<#dddddd>	inertial reference frames||<#dddddd>	Two X-Y axes, one on a moving cart, and "cord" vectors are painted with fluorescent paint and viewed in black light.||
-Line 24:
+Line 19:
-'''1E20. Rotating Reference Frames '''
+= 1E20. Rotating Reference Frames =
-Line 26:
+Line 23:
+||1E20.10||	Foucault pendulum||	A ceiling mounted pendulum swings freely. The change in path is noted at the end of the class period.||
||<#dddddd>1E20.11||<#dddddd>	short Foucault pendulum||<#dddddd>	A 70 cm pendulum with a method of nullifying the precession due to ellipticity.||
||1E20.19||	general and historical article||	Some discussion of a current murder novel, some history of Foucault's work, etc.||
||1E20.20||	Foucault pendulum model||	A pendulum is mounted on a rotating turntable.||
||<#dddddd>1E20.21||<#dddddd>	rotating frame||<#dddddd>	A monkey puppet sits on a rotating reference frame to help the student visualize a non-inertial frame.||
||<#dddddd>1E20.22||<#dddddd>	Foucault pendulum model||<#dddddd>	Sit on a rotating chair with a table on your lab. A pendulum releasing ink marks a clear pattern on the paper.||
||1E20.26||	geometric model||	A geometrical model helps correct some common misconceptions about the plane of oscillation of the Foucault pendulum.||
||1E20.27||	Foucault pendulum||	Excellent diagram explaining the variation of rotation of the Foucault pendulum with latitude||
||1E20.28||	Foucault pendulum precession||	Derivation of the Foucault pendulum period shows that no correction factor is needed for (1 m) lengths. Contradicts C.L.Strong, Sci.Am. 210,136 (1964).||
||1E20.30||	Foucault pendulum latitude model||	A vibrating elastic steel wire pendulum demonstrates how the rotation of the plane of oscillation depends on the latitude.||
||1E20.40||	Theory and two demonstrations||	The concept of a locally inertial frame is used to study motion in accelerated frames. Two demonstrations are presented.||
||<#dddddd>1E20.50||<#dddddd>	rotating room||<#dddddd>	Design for a rotating room that seats four at a table, and has four possible speeds.||
||1E20.50||	catch on a rotating platform||	Students try to play catch on a large rotating system. Other possibilities for the apparatus are discussed.||
||1E20.51||	rotating coordinate frame visualizer||	Experiments performed on a rotating frame are projected onto a screen through a rotating dove prism. Centrifugal force, Coriolis force, angular acceleration, cyclones and anticyclones, Foucault pendulum, etc.||
-Line 27:
+Line 38:
-'''1E30. Coriolis Effect '''
+= 1E30. Coriolis Effect =
-Line 29:
+Line 42:
+||<#dddddd>1E30.10||<#dddddd>	draw the Coriolis curve - vertical||<#dddddd>	Mount a rotating disk vertically, drive a pen on a cart at constant velocity in front of the disk. The speeds of the disk and cart are variable.||
||1E30.13||	Coriolis machine||	A clear plastic disk is placed over a inertial reference frame marked with a constant velocity path. Draw marks on the plastic disk while turning through equal angles.||
||<#dddddd>1E30.20||<#dddddd>	Coriolis gun||<#dddddd>	A clamped dart gun is fired by an instructor sitting on a revolving chair into a target board.||
||<#dddddd>1E30.20||<#dddddd>	Coriolis gun||<#dddddd>	A spring gun at the center of a rotating table fires into a target at the edge.||
||<#dddddd>1E30.21||<#dddddd>	Coriolis||<#dddddd>	Go to a merry-go-round and walk on it. You will feel a very strange "force".||
||<#dddddd>1E30.24||<#dddddd>	spinning Coriolis globe||<#dddddd>	A ball on a string is threaded through the pole of a spinning globe. Pull on the string and the ball moves to higher latitudes and crosses the latitude lines.||
||<#dddddd>1E30.26||<#dddddd>	Coriolis dish and TV||<#dddddd>	A ball oscillates in a spherical dish at rest, and follows various curved paths when the dish is rotated at different speeds. A TV camera is mounted to the rotating frame. More.||
||<#dddddd>1E30.27||<#dddddd>	Coriolis rotating platform and tv||<#dddddd>	A puck is launched on a rotating platform and the motion is followed with a TV||
||<#dddddd>1E30.28||	<#dddddd>Coriolis effect||<#dddddd>	Roll a ball across a slowly rotating turntable.||
||<#dddddd>1E30.30||<#dddddd>	leaky bucket on turntable||<#dddddd>	A can with a hole is mounted above a rotating table. As the table turns, the stream of water is deflected.||
||<#dddddd>1E30.32||<#dddddd>	drop ball on turntable||<#dddddd>	A mass falls on a disc first while it is rotating and then when it is stationary. Difference in point of impact is noted.||
||<#dddddd>1E30.33||<#dddddd>	Coriolis trajectory||<#dddddd>	A ball describing an arc is released first in a stationary coordination system and then in a rotating system.||
||1E30.35||	rotating water flow table||	Food coloring used to mark flow is introduced at the edges of a circular rotating tank with a center drain hole. A rotating overhead TV camera allows motion in the rotating frame to be viewed.||

fw: Diff for "RelativeMotion"

Relative Motion

1E10. Moving Reference Frames

1E20. Rotating Reference Frames

1E30. Coriolis Effect