A body is acted upon by two unequal forces in opposite directions, but not in the same line. The effect is that:

1. the body will only have rotational motion
2. the body will only have translational motion
3. the body will have neither rotational motion nor translational motion
4. the body will have rotational as well as translational motion.

For a body to be in equilibrium, which of the following conditions is necessary?

1. Its momentum is zero.
2. Its kinetic energy is zero.
3. Its velocity is zero.
4. lts acceleration is zero.

State whether the moment of force is a scalar or vector quantity?

Write the expression for the moment of force about a given axis.