Directions : In the following question more than one of the answers given may be correct. Select the correct answer and mark it according to the code:
One solid sphere and a disc of same radius are falling along an inclined plane without slip. One reaches earlier than the other due (1) different size (2) different radius of gyration (3) different friction (4) different moment of inertiaA) 1, 2 and 3 are correct.
B) 1 and 2 are correct.
C) 2 and 4 are correct.
D) 1 and 3 are correct.
Correct Answer: C
Solution :
Time of descent depends upon the value of radius of gyration or moment of inertia. Actually radius of gyration is the measure of moment of inertia of the body.
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