A force of 100N is applied tangentially to the rim of a wheel of diameter 120 cm. The wheel rotates about an axis passing through its centre. What is the torque acting on the wheel?

Options

A. 40 Nm
B. 50 Nm
C. 60 Nm
D. 70 Nm

Answer

C

Explanation

Torque `tau=Fxxr` , where r is the perpendicular distance between the line of action of the force and the axis of the rotating wheel
= Radius of the wheel = 60cm = 0.6 cm
`tau=100xx0.6=60`Nm