Question

Angle between force and momentum vectors in uniform circular motion is

• A. $0^o$
• B. ${30}^o$
• C. ${45}^o$
• D. ${90}^o$

Answer 1

The correct option is D ${90}^o$

Force is directed towards the center(or along the radius) of the circle in uniform circular motion. Momentum is directed along the tangential direction in a uniform circular motion. Since tangent and radius of a circle are perpendicular to each other, angle between force and momentum vectors is equal to ${90}^o$.