In the following figure, a body of mass $m$ is tied at one end of a light string and this string is wrapped around the solid cylinder of mass $M$ and radius $R$. At the moment $t = 0$ the system starts moving. If the friction is negligible, angular velocity at time $t$ would be
$\frac{{mgRt}}{{(M + m)}}$
$\frac{{2Mgt}}{{(M + 2m)}}$
$\frac{{2mgt}}{{R(M - 2m)}}$
$\frac{{2mgt}}{{R(M + 2m)}}$
Which types of force acting on the system of particle ?
Write the meaning of homogeneous bodies.
How many degrees of freedom does a rotational motion about fixed axis ?
Which forces needed for the rotational motion about a fixed axis ?
Two hollow spheres each of mass $M$ and radius $\frac {R}{2}$ are connected with a massless rod of length $2R$ as shown in figure. What will be the moment of inhertia of the system about an axis $yy'$ passing through the center of one of the sphere and perpendicular to the rod