two balls with the same mass, one of wood and the other a ping-pong ball partly filled with sand, are rolled along a desk. The wooden ball rolls along nicely, but the ping-pong ball stops in a few centimetres. What happened to its kinetic energy..? well was the kinetic energy changed to heat energy by the force of friction between the ball and the desk..?
2006-11-27 22:25:14 · 8 answers · asked by heyheyhey 2 in Science & Mathematics ➔ Physics
You are right..
The ping pong ball is heavier in weight so it experienced more frictional force , acting opposite in the direction of its motion.
Also as its made of plastic (with sand filled in it) the area of contact with the surface is more than the wooden ball (which is more rigid in shape) thus has less area of contact.
Thus its kinetic energy is dissipated as heat energy under the action of frictional forces faster than the wooden ball.
Have a nice day.
:)
2006-11-27 22:27:32 · answer #1 · answered by Aqua 4 · 1⤊ 0⤋
Actually the wooden ball have its equal mass along all the sides of the ball and have a mid-center of gravity so it will definately run smoothely, while the ping-pong ball partly filled with sand have a low centre of gravity so the ball while its running itll have the gravitational force pulling it downwards which slows it down..
about the kinetic energy, its changed heat, sound,
between the ball and the desk...friction gives out heat,
2006-11-27 22:46:10 · answer #2 · answered by MiGO ^_~ 4 EveR 1 · 0⤊ 0⤋
Ping-pong ball is stoped by the force of friction between the ball surface and the sand inside the ball; if the ball were completly filled with sand it would be rolling along the desk easily.
2006-11-27 22:47:00 · answer #3 · answered by Ugi 2 · 0⤊ 0⤋
its not only the friction but also the half filled sand, there is a eqilibrium in the wooden mass when its roles but the half filled boll which will lead to uneven cyclic displacemnting( will roll fast and slow alternatively ) of the boll. this will end in lose of enery due to the back force which try stops the ball.
2006-11-27 22:35:05 · answer #4 · answered by sendtopadmanaban 2 · 0⤊ 0⤋
Yes.obviously
2006-11-27 22:40:04 · answer #5 · answered by maussy 7 · 0⤊ 0⤋
Ithink both the points for this answer has been mentioned.
2006-11-27 22:38:36 · answer #6 · answered by Adithya M 2 · 0⤊ 0⤋
Everyone has their own opinion, but I don't think so
2016-08-08 20:17:17 · answer #7 · answered by Anonymous · 0⤊ 0⤋
I was wondering much the same question
2016-08-23 11:32:44 · answer #8 · answered by Anonymous · 0⤊ 0⤋