Diff for "Newtons2NDLaw" - UW-Physics Faculty Wiki

Differences between revisions 2 and 3

Newton's Second Law

PIRA classification 1G

1G10. Force, Mass, and Acceleration

PIRA #	Demonstration Name	Abstract
1G10.10	acceleration air glider	Air track cart pulled by a falling weight.
1G10.10	acceleration air glider	Accelerate a car on a track with a mass on a string over a pulley.
1G10.10	glider, mass, and pulley	An air track cart is timed while pulled by a mass on a string over a pulley.
1G10.10	string and weight acceleration (air	Three cases of an air glider pulled by a falling weight.
1G10.11	constant mass acceleration system	A cart on the air track is accelerated by a mass on a string over a pulley and final velocity timed photoelectrically. Keep the mass of the system constant by transferring from the cart to the pan.
1G10.11	acceleration air glider	Air cart with a string over a pulley to a mass. Vary mass on both cart and hanger.
1G10.12	acceleration air glider on incline	An puck is timed as it floats up an incline pulled by a string to a weight over a pulley.
1G10.13	acceleration air glider on incline	An air track cart is accelerated up an inclined track by the string, pulley and mass system. A newton scale is included on the cart to measure the tension in the string directly. An electromagnet release and photogate timer at a fixed distance are used to derive acceleration.
1G10.14	acceleration glider accelerometer	An elegant pendulum accelerometer designed for the air track. Reflected laser beam is directed to a scale at one end of the track.
1G10.16	acceleration with spring (air track)	An air track glider is pulled by a small spring hand held at constant extension.
1G10.17	constant force generators	A note that picks some nits about the hanging mass, mentions the "Neg'ator" spring.
1G10.18	battery propeller force generator	Plans for a battery powered air track propeller that provides a constant force.
1G10.19	constant force generator	A constant force generator for the air track based on the induction of eddy currents. It is easy to handle and can be self-made.
1G10.20	acceleration car	Time the acceleration of a toy truck as it is pulled across the table by a mass on a string over a pulley.
1G10.21	acceleration car and track	Apparatus Drawings Project No. 15: Large low friction acceleration carts and track for use in the lecture demonstration.
1G10.21	acceleration car	Three different pulley arrangements allow a cart to be accelerated across the table top.
1G10.21	acceleration car	A car is accelerated by a descending weight.
1G10.21	acceleration car, mass & pulley	Distance and time are measured as a toy truck is accelerated by a mass and pulley system.
1G10.24	acceleration car photo	Take a strobed photo of a light on a car pulled by a weight on a string over a pulley.
1G10.25	acceleration block	Accelerate a block of wood across the table by a mass on a string over a pulley.
1G10.26	acceleration car	A complex arrangement to accelerate a car, vary parameters, and graph results is shown. Details in appendix, p.549.
1G10.30	weight of a mass	Suspend a mass from a spring balance and then cut the string.
1G10.30	mass on a scale	Hang a mass on a spring scale to show reaction of the scale to mg.
1G10.40	Atwood's machine	Two equal masses are hung from a light pulley. A small percentage of one mass is moved to the other side.
1G10.40	Atwood's machine	Place 1 kg on each side of a light pulley on good bearings. Add 2 g to one side.
1G10.40	Atwood's machine	Three skeletonized aluminum pulleys are mounted together on good bearings. Many combinations of weights may be tried.
1G10.40	Atwood's machine	Two equal masses are hung from a light pulley. A small percentage of one mass is moved to the other side.
1G10.40	Atwood's machine	An Atwood's machine using an air pulley.
1G10.40	Atwood's machine	The small weight is removed after a period of acceleration and the resulting constant velocity is measured.
1G10.42	Atwood's machine	Hang the weights from spring balances on each side.
1G10.44	Atwood's machine	A rotation free Atwood's machine using air bearing surface and spark timer.
1G10.44	Atwood's machine	Atwood's machine using an air bearing and spark timer.
1G10.45	Atwood's machine problem	One of the best nerd problems ever.
1G10.45	Morin's machine	Morin's (French) alternative to Atwood's (English) machine.
1G10.51	auto acceleration	On using automotive magazine test results to study kinematic relations.
1G10.52	car time trials	Use student's cars to do time trials in the school parking lot.

1G20. Accelerated Reference Frames

PIRA #	Demonstration Name	Abstract
1G20.10	candle in a bottle	Drop a candle burning in a large flask.
1G20.10	candle in a bottle	Drop, toss up, and throw a bottle containing a lighted candle.
1G20.10	gravitational pressure in circulation	Drop a plexiglass container with a lighted candle.
1G20.10	bottle and candle	Throw a jug with a lighted candle into the air.
1G20.10	candle in a bottle	A lighted candle in a glass chimney in a large container will burn for a long time unless dropped.
1G20.10	candle in a bottle	A candle in a dropped chimney goes out after 2-3 meters due to absence of convection currents.
1G20.10	candle in dropped jar	Drop a closed jar containing a burning candle.
1G20.11	falling candle doesn't work	Hey, when these guys tried it they could drop the bottle 25 feet and the candle only went out upon deceleration.
1G20.13	elevator paradox	A large hydrometer flask in a beaker of water remains at its equilibrium position as the beaker is moved up and down.
1G20.14	four demos	Four demos: Drop a weight on a spring balance, drop a cup with weights on rubber bands, drop a candle in a bottle, drop or throw a tube of water containing a rising cork.
1G20.20	ball in a thrown tube	Invert and throw a 4' plexiglass tube full of water that contains a cork. The rising cork will remain stationary during the throw.
1G20.20	ball in a thrown tube	Throw or drop long water filled tube containing a cork. Also try a rubber stopper or air bubble.
1G20.20	falling bubble	A rising bubble in a jar remains stationary while the jar is thrown.
1G20.20	ball in a thrown tube	A long thin tube with an air bubble is tossed across the room.
1G20.21	modified falling tube	Couple a lead weight and cork with a spring and put the assembly in a tube of water so the cork just floats. Drop the tube and the cork sinks.
1G20.21	ball in a falling tube	A cork remains submerged in a falling jar of water. Diagram of a mousetrap mechanism.
1G20.22	ball in a falling tube	A ball and tube are dropped simultaneously from the ceiling. The ball strikes the bottom of the tube after hitting the floor.
1G20.30	drop pail with holes	First drop a can with several vertical holes to show no flow in free fall, then rig up a pulley system to accelerate the pail greater than g (shown), and the top hole will issue the longest stream of water.
1G20.30	leaky pail drop	Punch a hole in the bottom of a can and fill it with water. When you drop it, no water will run out.
1G20.33	pop the balloon	This device pops a balloon if it is not in free fall. Toss it to a student to give them a real bang.
1G20.34	vanishing weight	A strip of paper pulled from between two weights will tear except when dropped.
1G20.36	vanishing weight	Weights compress the tube of an air whistle until in free fall when the whistle blows.
1G20.38	Einstein's birthday present	A ball attached to a tube by a weak rubber band is pulled to the tube in free fall.
1G20.40	cup and weights	Hang 1 kg weights from heavy rubber bands extending from the center over the edge of a styrofoam bucket. Drop the thing.
1G20.40	cup & weights	Further discussion of the R. D. Edge article describing dropping a styrofoam cup with weights suspended over the edge by rubber bands.
1G20.41	vanishing weight - dropping things	1) Drop a mass on a spring scale, 2) Drop an object with a second object hanging by a rubber band, 3) stretch a rubber band over the edge of a container and drop.
1G20.42	vanishing weight	A parcel scale is dropped with a bag of sand on the platform.
1G20.43	elevators	A battery powered circuit is constructed in a box causes a light to glow while a spring scale is unloaded. The light will glow while a loaded spring scale is in free fall.
1G20.44	drop a mass on a spring	Drop a frame with an oscillating mass on a spring and the mass will be pulled up but stop oscillating.
1G20.45	dropped slinky	Hold a slinky so some of it extends downward, then drop it to show the contraction.
1G20.46	vanishing weight	Drop a frame containing three different masses hanging on identical springs or a frame with a pendulum.
1G20.47	dropping pendulum	Suspend a pendulum from a stick. Drop the stick when the pendulum is at an extreme and the stick and pendulum will maintain the same relative position.
1G20.55	falling frame shoot	A falling cage is equipped with two guns lined up with holes in two sheets and a net to catch the ball. The balls don't go through the holes unless the cage is in free fall.
1G20.60	elevators	Quickly raise and lower a spring balance-mass system.
1G20.61	elevators	Discussion of the elevator problem and a car going around a curve.
1G20.62	elevators	A rope over a ceiling mounted pulley has a weight on one side and a spring scale and lighter weight on the other side.
1G20.63	elevators	An apparatus to quantitatively demonstrate the forces acting on a passenger standing on a spring scale in an elevator. Diagrams.
1G20.64	elevator	The elevator is a spring scale and potentiometer combination.
1G20.70	accelerometer on tilted air track	The water surface of a liquid accelerometer on a tilted air track remains parallel to the angle of the air track during acceleration.
1G20.70	showing acceleration	Put a cart on an incline, mount a liquid accelerometer on the cart and mark the reference at rest, give the cart a push up the incline and observe the accelerometer as the car goes up, stops, and comes back down.
1G20.70	accelerometer	A Lucite box containing colored glycerine mounted on a cart is rolled down an incline or given a push up an incline.
1G20.70	local vertical with acceleration	Place a liquid accelerometer on an air track glider on an inclined air track
1G20.75	helium balloon accelerometer	Put two students in a car with a helium balloon.
1G20.75	accelerometer	A balloon filled with air is suspended from the top and a helium balloon from the bottom of a clear box mounted on wheels.
1G20.76	float accelerometer	A float in a glass of water on an accelerating cart. Also, moving in uniform circular motion.
1G20.76	accelerometer	Two flasks full of water, one has a cork ball, the other has a heavier than water ball.
1G20.76	accelerometer	An iron ball is suspended from the top and a cork ball from the bottom of a clear box filled with water mounted on wheels.
1G20.76	accelerometers	Two jars of water, one has a light ball suspended from the bottom, the other has a heavy ball suspended from the top.
1G20.79	accelerometer	A design for a high quality accelerometer.
1G20.80	cart and elastic band	Place an accelerometer (cork on a string in a clear water filled box) on a cart and attach a strong rubber band to one end. Push the cart down the bench while holding the rubber band.
1G20.85	acceleration pendulum cart	Push a skateboard across the lecture bench so an attached pendulum is displaced at a constant angle.
1G20.87	accelerometer	The bubble of a spirit level moves in the direction of acceleration.
1G20.87	accelerometer	Place a carpenter's level on Fletcher's trolley and use the bubble as an accelerometer.
1G20.88	accelerometer	A discussion of "U" tube manometers for use as accelerometers.

1G30. Complex Systems

PIRA #

Demonstration Name

Abstract

[:Demonstrations:Demonstrations]

[:Instructional:Home]

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+||1G20.10||	candle in a bottle||	Drop a candle burning in a large flask.||
||1G20.10||	candle in a bottle||	Drop, toss up, and throw a bottle containing a lighted candle.||
||1G20.10||	gravitational pressure in circulation||	Drop a plexiglass container with a lighted candle.||
||1G20.10||	bottle and candle||	Throw a jug with a lighted candle into the air.||
||1G20.10||	candle in a bottle||	A lighted candle in a glass chimney in a large container will burn for a long time unless dropped.||
||1G20.10||	candle in a bottle||	A candle in a dropped chimney goes out after 2-3 meters due to absence of convection currents.||
||1G20.10||	candle in dropped jar||	Drop a closed jar containing a burning candle.||
||1G20.11||	falling candle doesn't work||	Hey, when these guys tried it they could drop the bottle 25 feet and the candle only went out upon deceleration.||
||1G20.13||	elevator paradox||	A large hydrometer flask in a beaker of water remains at its equilibrium position as the beaker is moved up and down.||
||1G20.14||	four demos||	Four demos: Drop a weight on a spring balance, drop a cup with weights on rubber bands, drop a candle in a bottle, drop or throw a tube of water containing a rising cork.||
||1G20.20||	ball in a thrown tube||	Invert and throw a 4' plexiglass tube full of water that contains a cork. The rising cork will remain stationary during the throw.||
||1G20.20||	ball in a thrown tube||	Throw or drop long water filled tube containing a cork. Also try a rubber stopper or air bubble.||
||1G20.20||	falling bubble||	A rising bubble in a jar remains stationary while the jar is thrown.||
||1G20.20||	ball in a thrown tube||	A long thin tube with an air bubble is tossed across the room.||
||1G20.21||	modified falling tube||	Couple a lead weight and cork with a spring and put the assembly in a tube of water so the cork just floats. Drop the tube and the cork sinks.||
||1G20.21||	ball in a falling tube||	A cork remains submerged in a falling jar of water. Diagram of a mousetrap mechanism.||
||1G20.22||	ball in a falling tube||	A ball and tube are dropped simultaneously from the ceiling. The ball strikes the bottom of the tube after hitting the floor.||
||1G20.30||	drop pail with holes||	First drop a can with several vertical holes to show no flow in free fall, then rig up a pulley system to accelerate the pail greater than g (shown), and the top hole will issue the longest stream of water.||
||1G20.30||	leaky pail drop||	Punch a hole in the bottom of a can and fill it with water. When you drop it, no water will run out.||
||1G20.33||	pop the balloon||	This device pops a balloon if it is not in free fall. Toss it to a student to give them a real bang.||
||1G20.34||	vanishing weight||	A strip of paper pulled from between two weights will tear except when dropped.||
||1G20.36||	vanishing weight||	Weights compress the tube of an air whistle until in free fall when the whistle blows.||
||1G20.38||	Einstein's birthday present||	A ball attached to a tube by a weak rubber band is pulled to the tube in free fall.||
||1G20.40||	cup and weights||	Hang 1 kg weights from heavy rubber bands extending from the center over the edge of a styrofoam bucket. Drop the thing.||
||1G20.40||	cup & weights||	Further discussion of the R. D. Edge article describing dropping a styrofoam cup with weights suspended over the edge by rubber bands.||
||1G20.41||	vanishing weight - dropping things||	1) Drop a mass on a spring scale, 2) Drop an object with a second object hanging by a rubber band, 3) stretch a rubber band over the edge of a container and drop.||
||1G20.42||	vanishing weight||	A parcel scale is dropped with a bag of sand on the platform.||
||1G20.43||	elevators||	A battery powered circuit is constructed in a box causes a light to glow while a spring scale is unloaded. The light will glow while a loaded spring scale is in free fall.||
||1G20.44||	drop a mass on a spring||	Drop a frame with an oscillating mass on a spring and the mass will be pulled up but stop oscillating.||
||1G20.45||	dropped slinky||	Hold a slinky so some of it extends downward, then drop it to show the contraction.||
||1G20.46||	vanishing weight||	Drop a frame containing three different masses hanging on identical springs or a frame with a pendulum.||
||1G20.47||	dropping pendulum||	Suspend a pendulum from a stick. Drop the stick when the pendulum is at an extreme and the stick and pendulum will maintain the same relative position.||
||1G20.55||	falling frame shoot||	A falling cage is equipped with two guns lined up with holes in two sheets and a net to catch the ball. The balls don't go through the holes unless the cage is in free fall.||
||1G20.60||	elevators||	Quickly raise and lower a spring balance-mass system.||
||1G20.61||	elevators||	Discussion of the elevator problem and a car going around a curve.||
||1G20.62||	elevators||	A rope over a ceiling mounted pulley has a weight on one side and a spring scale and lighter weight on the other side.||
||1G20.63||	elevators||	An apparatus to quantitatively demonstrate the forces acting on a passenger standing on a spring scale in an elevator. Diagrams.||
||1G20.64||	elevator||	The elevator is a spring scale and potentiometer combination.||
||1G20.70||	accelerometer on tilted air track||	The water surface of a liquid accelerometer on a tilted air track remains parallel to the angle of the air track during acceleration.||
||1G20.70||	showing acceleration||	Put a cart on an incline, mount a liquid accelerometer on the cart and mark the reference at rest, give the cart a push up the incline and observe the accelerometer as the car goes up, stops, and comes back down.||
||1G20.70||	accelerometer||	A Lucite box containing colored glycerine mounted on a cart is rolled down an incline or given a push up an incline.||
||1G20.70||	local vertical with acceleration||	Place a liquid accelerometer on an air track glider on an inclined air track||
||1G20.75||	helium balloon accelerometer||	Put two students in a car with a helium balloon.||
||1G20.75||	accelerometer||	A balloon filled with air is suspended from the top and a helium balloon from the bottom of a clear box mounted on wheels.||
||1G20.76||	float accelerometer||	A float in a glass of water on an accelerating cart. Also, moving in uniform circular motion.||
||1G20.76||	accelerometer||	Two flasks full of water, one has a cork ball, the other has a heavier than water ball.||
||1G20.76||	accelerometer||	An iron ball is suspended from the top and a cork ball from the bottom of a clear box filled with water mounted on wheels.||
||1G20.76||	accelerometers||	Two jars of water, one has a light ball suspended from the bottom, the other has a heavy ball suspended from the top.||
||1G20.79||	accelerometer||	A design for a high quality accelerometer.||
||1G20.80||	cart and elastic band||	Place an accelerometer (cork on a string in a clear water filled box) on a cart and attach a strong rubber band to one end. Push the cart down the bench while holding the rubber band.||
||1G20.85||	acceleration pendulum cart||	Push a skateboard across the lecture bench so an attached pendulum is displaced at a constant angle.||
||1G20.87||	accelerometer||	The bubble of a spirit level moves in the direction of acceleration.||
||1G20.87||	accelerometer||	Place a carpenter's level on Fletcher's trolley and use the bubble as an accelerometer.||
||1G20.88||	accelerometer||	A discussion of "U" tube manometers for use as accelerometers.||

fw: Diff for "Newtons2NDLaw"

Newton's Second Law