Key point : Try to develop the study of rotational motion parallel to the study of translational motion .
In Translatory motion
If we apply a force ,say F, on an object , and the force causes a net displacement of the object , then we say work is done .
In that case we have ,
In rotational motion
When a torque / moment of force ( analogue of force in rotational motion) causes a body to rotate by an angular displacement
Similar to translational ,
In vector notation
P=Τ.ω ( since,