A thick walled hollow sphere has outer radius \( R \). It rolls down an inclined plane without s...
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0A thick walled hollow sphere has outer radius \( R \). It rolls down an inclined plane without slipping and its speed at
\( \mathrm{P} \) the bottom is \( v \). If the inclined plane is frictionless and the
W sphere slides down without rolling, its speed at the bottom is \( 5 \mathrm{v} / 4 \). What is the radius of gyration of the sphere?
(1) \( \frac{R}{\sqrt{2}} \)
(2) \( \frac{R}{2} \)
(3) \( \frac{3 R}{4} \)
(4) \( \frac{\sqrt{3} R}{4} \)
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