Highly selective Backlog Qs for JEE MainPhysicsRotational Motion
If F is the force acting on a particle having position vector r and be the torque of this force about the origin, then
Options
- Ar 0 and F =0
- Br > 0 and F < 0
- Cr =0 and F =0
- Dr =0 and F 0
Correct answer
C. r =0 and F =0
Step-by-step solution
Torque is an axial vector i.e., its direction is always perpendicular to the plane containing vectors r and F . = r F Torque is perpendicular to both r and F aligned r & =0 F & =0 aligned