Kinematics Question 561

Question: A particle is kept at rest at the top of a sphere of diameter 42 m.When d it’sturbed slightly, it slides down.At what height h from the bottom, the particle will leave the sphere [BHU 2003]

Options:

A) 14 m

B)28 m

C) 35 m

D) 7 m

Show Answer

Answer:

Correct Answer: C

Solution:

As we know for hem it’sphere the particle will leave the sphere at height $ h=2r/3 $

$ h=\frac{2}{3}\times 21=14m $ but from the bottom $ H=h+r=14+21=35metre $



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