A stone of mass m tied to a string of length l is rotating along a circular path with constant speed v . The torque on the stone is:

Question

A stone of mass m tied to a string of length l is rotating along a circular path with constant speed v . The torque on the stone is: (A)  mlv  (B)  (mv/l)  (C)  (mv2/l)  (D)  mv2l

Tardigrade Admin · Accepted Answer

Torque acting on a body in circular motion is zero.

Q. A stone of mass $m$ tied to a string of length $l$ is rotating along a circular path with constant speed $v$ . The torque on the stone is:

$m l v$

$\frac{m v}{l}$

$\frac{m v ^{2}}{l}$

$m v^{2} l$

zero

Torque acting on a body in circular motion is zero.

Q. A stone of mass m tied to a string of length l is rotating along a circular path with constant speed v . The torque on the stone is:

mlv

lmv​

lmv2​

mv2l

zero

Torque acting on a body in circular motion is zero.

Q. A stone of mass $m$ tied to a string of length $l$ is rotating along a circular path with constant speed $v$ . The torque on the stone is:

$m l v$

$\frac{m v}{l}$

$\frac{m v ^{2}}{l}$

$m v^{2} l$