Physics · 2012
NEET 2012 · Mains · Code C · Q89
A circular platform is mounted on a frictionless vertical axle. Its radius R =2 m and its moment of inertia about the axle is 200 kg m^2. It is…
A circular platform is mounted on a frictionless vertical axle. Its radius $\displaystyle \mathrm{R}=2 \mathrm{~m}$ and its moment of inertia about the axle is $\displaystyle 200 \mathrm{~kg} \mathrm{~m}^2$. It is initially at rest. A $\displaystyle 50$ kg man stands on the edge of the platform and begins to walk along the edge at the speed of $\displaystyle 1 \mathrm{~ms}^{-1}$ relative to the ground. Time taken by the man to complete one revolution is :
Official answer
(1)
$\displaystyle 2 \pi \mathrm{~s}$
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