Question

The power rating of a ceiling fan rotating with a constant torque of 2 Nm with an angular speed 2π of rad/s will be ______.

Options

• π W

• 2π W

• 3π W

• 4π W

Answer 1

The power rating of a ceiling fan rotating with a constant torque of 2 Nm with an angular speed 2π of rad/s will be 4π W.

Explanation: 

The power P of a rotating object is given by the formula:

P = r × W

Where,

r = 2 Nm (Torque)

W = 2π rad/s (Angular speed)

p = 2 × 2π = 4π W