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Code Number: 1N30.50
Demo Title: Impulse Demo - Elastic and Inelastic Pendulum
Condition: Good
Principle: Conservation of Linear Momentum, Impulse
Area of Study: Mechanics
Equipment:
Sad-Happy Ball Combo on Bifilar Support, 2 x 4 Board, and Meter Stick on Stand.
Procedure:
Set the sad-happy ball combo on the suspension and move the suspension apart until the ball swings without any lateral movement. Set the upright meter stick to a position so that when you pull back on the pendulum you come to about 62 cm. To change from an elastic to an inelastic collision just reverse the bifilar supports. The inelastic collision will not knock over the board where as the elastic collision will.
References:
- Rod Cross, "Elastic and Inelastic Collisions of a Ball with a Wood Block", TPT, Vol. 55, #8, Nov. 2017, p. 467.
- Paul Hewitt, "Answer to January 2017 Figuring Physics", TPT, Vol. 55, #2, Feb. 2017, p. 120.
- Paul Hewitt, "Answer to November 2016 Figuring Physics", TPT, Vol. 54, #9, Dec. 2016, p. 565.
- Xueli Zou, "The Sandbag Collision", TPT, Vol. 44, #7, Oct. 2006, p. 448.
- Paul G. Hewitt, "The Bouncing Dart", TPT, Vol. 22, #5, May 1984, p. 302, reprinted in TPT, Vol. 44, #6, Sept. 2006, p. 394.
- Edward P. Wyrembeck, "Using a Force Plate to Correct Student Misconceptions", TPT, Vol. 43, #6, Sept. 2005, p. 384.
- Willem H. van den Berg, "Force Exerted by a Falling Chain", TPT, Vol. 36, #1, Jan. 1998, p. 44.
- P. Roura, "Collision Duration in the Elastic Regime", TPT, Vol. 35, #7, Oct. 1997, p. 435.
- David Kagan and Alan Kott, "The Greater-Than-g Acceleration of a Bungee Jumper", TPT, Vol. 34, #6, Sept. 1996, p. 368.
- Stanley J. Micklavzina, "Impulse Demonstration Using a 'Half-Bouncy' Ball", TPT, Vol. 34, #4, Apr. 1996, p. 253.
- Fred Bucheit, "A Momentum Transfer Demonstration with 'Happy/Unhappy' Balls",TPT, Vol. 32, #1, Jan. 1994, p. 28.
- Martin Gardner, "Stabbing an Eggshell", TPT, Vol. 29, #3, Mar. 1991, p. 149.
- Paul G. Hewitt, "The Bouncing Dart", TPT, Vol. 22, #5, May 1984, p. 302.
- Haym Kruglak and Harold M. Waage, "Momentum Transfer Demonstration", TPT, Vol. 5, #3, Mar. 1967, p. 124.
- Stanley J. Micklavzina, "Impulse Demo", PIRA Newsletter, Vol. 9, #2, Nov. 1994, p. 16.
- "M-600. Rebounding Pendula Balls", DICK and RAE Physics Demo Notebook
- "M-250. Break String with Large Mass", DICK and RAE physics Demo Notebook.
- Bill Franklin, "Toppling a Block With a Pendulum Blow", Teaching About Impulse and Momentum, p. 4.16.
- Martin Gardner, "Stabbing an Eggshell", Science Tricks, p. 36.
- David Kutliroff, "25. Conservation of Momentum in Elastic and Inelastic Collisions", 101 Classroom Demonstrations and Experiments For Physics Teachers, p. 57.
- Borislaw Bilash II and David Maiullo, "Knock It Over", A Demo a Day: A Year of Physics Demonstrations, p. 101.
- Jearl Walker, "1.170. A Choice of Hammers", The Flying Circus of Physics Ed. 2, p. 79.
- Christopher P. Jargodzki and Franklin Potter, "244. Collision with a Massive Wall", Mad About Physics, p. 97, 234.
- Robert Ehrlich, "C.5. Swinging Two Balls Into a Block", Turning the World Inside Out and 174 Other Simple Physics Demonstrations, p. 27 - 28.
- Julius Sumner Miller, Q32 & A32, Millergrams I – Some Enchanting Questions for Enquiring Minds, p. 30 & 87.