A body is uniformly rotating about an axis fixed in an inertial frame of reference. Let be a unit vector along the axis of rotation and be the unit vector along the resultant force on a particle P of the body away from the axis. The value of is
In case of a rotational motion the force is always a central force. So, θ=π/2.

Question

In case of a rotational motion the force is always a central force. So, θ=π/2.

Philoid · Accepted Answer

In case of a rotational motion the force is always a central force. So, θ=π/2.