Which one of the following expressions gives the correct magnitude of the torque…

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

Problem

Which one of the following expressions gives the correct magnitude of the torque

\tau

produced by a force

F

acting at a point whose position vector from the chosen axis is

r

and which makes an angle

\theta

with

\mathbf r

? (a)

\tau = F r \cos\theta

(b)

\tau = F r \sin\theta

(c)

\tau = F r \tan\theta

(d)

\tau = F r