Question

Explain how torque can be expressed as a vector product of two vectors. Give its special cases when θ= 0 0 and θ= 900.

Answer 1

Answer:

Definition and relation to angular momentum

A particle is located at position r relative to its axis of rotation. When a force F is applied to the particle, only the perpendicular component F⊥ produces a torque. This torque τ = r × F has magnitude τ = |r| |F⊥| = |r| |F| sin θ and is directed outward from the page.