Class 11

Physics

Mechanics

Rotational Dynamics

Average torque on a projectile of mass $m$ (initial speed $u$ and angle of projection $θ)$ between initial and final positions $P$ and $Q$ as shown in figure, about the point of projection is :

.

- $12mu_{2}sin2θ $
- $2mu_{2}cosθ $
- $mu_{2}sinθ$
- $mu_{2}cosθ$