For a force of fixed magnitude applied at a fixed point on a lever arm of length

PHYSICS · Single correct · CBSE · Physics · System of Particles and Rotational Motion · System of Particles and Rotational Motion

Problem

r

, at which angle between the force vector and the lever arm is the torque about the pivot maximum? (a)

0^{\circ}

(b)

60^{\circ}

(c)

90^{\circ}

(d)

120^{\circ}