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13. You throw a tennis ball of radius R on the floor such that it rolls freely on a flat surface
for some time and then it hits a patch of ice where the coefficient of friction between the
ball and the ice is s = 0. When the ball hits the patch

(a) It continues to roll as before.
(b) It starts to spin
(c) It begins to skid
(d) none of the above

I think the answer is c) is it correct or do you think otherwise. please provide a short explanation with your answer.

2007-12-04 13:42:05 · 1 answers · asked by tellme 2 in Science & Mathematics Physics

could not some of the rotational kinetic energy get converted into transitional kinetic energy and cause sliding. isnt this effect same as a car skidding when it goes over ice.

2007-12-05 05:43:12 · update #1

1 answers

Without friction there is no loss of energy, therefore the translational kinetic energy will be maintained, so the speed is the same, and the rotational kinetic will be maintained, so it will continue to have the same angular speed. In this ideal case, a is the answer.

j

2007-12-05 03:56:55 · answer #1 · answered by odu83 7 · 0 0

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