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QUESTION 3** Suppose the original solid disk now slides (rather than rolls) down the incline, which...

QUESTION 3**

Suppose the original solid disk now slides (rather than rolls) down the incline, which now has a frictionless surface. Compared with the case where it rolls without slipping, the total kinetic energy of the disk the bottom of the incline will be

(a)   smaller.
(b)   the same.
(c)   larger.

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Answer #1

b) the same

since work done by all forces is same in both cases

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Answer #2

the total kinetic energy = Rotational + Translation the total kinetic energ(shdesonby) therefore KE > KE Ans: (a) smaller

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