Two particles of equal mass are connected to a rope $AB$ of negligible mass such that one is at end $A$ and other dividing the length of rope in the ratio $1:2$ from $B$. The rope is rotated about end $B$ in a horizontal plane. Ratio of tensions in the smaller part to the other is (ignore effect of gravity)

- A
$4:3$

- B
$1:4$

- C
$1:2$

- D
$1:3$

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

Characteristic of rotational motion.

What is rigid body?

Write the meaning of homogeneous bodies.

Write the Newton's second law for rotational motion about a fixed axis.