A tangential force $F$ is applied on a disc of radius $R$, due to which it deflects through an angle $\theta $ from its initial position. The work done by this force would be
$FR$
$F\theta $
$\frac{{FR}}{\theta }$
$FR\theta $
A solid sphere and solid cylinder of identical radii approach an incline with the same linear velocity (see figure). Both roll without slipping all throughout. The two climb maximum heights $h_{sph}$ and $h_{cyl}$ on the incline. The radio $\frac{{{h_{sph}}}}{{{h_{cyl}}}}$ is given by
A body is rolling without slipping on a horizontal plane. If the rotational energy of the body is $40\%$ of the total kinetic energy, then the body might be
Write the formula for power and angular momentum in rotational motion.
A uniform thin rod of length $l$ is suspended from one of its ends and is rotated at $f$ rotations per second. The rotational kinetic energy of the rod will be
$A$ man, sitting firmly over a rotating stool has his arms streched. If he folds his arms, the work done by the man is