Questions
A ball is released from the top (A) of a semi cylindrical surface of which part AB is sufficiently rough and BC is smooth. Then:
detailed solution
Correct option is C
Section AB is smooth, so the initial potential energy will convert into only translational kinetic energy. After point B, due to rough surface, some energy will also convert into rotational kinetic energy . Thus, it cannot reach to point C.Talk to our academic expert!
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A solid sphere, a hollow sphere and a disc, all having same mass and radius, are placed at the top of an incline and released. The friction coefficients between the objects and the incline are the same and not sufficient to allow pure rolling. Least time will be taken in reaching the bottom by
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