Question

Select the WRONG statement.

Options

• The moment of inertia is the torque acting per unit angular acceleration.

• The SI unit of moment of inertia is kg m².

• The dimensions of the moment of inertia are [M¹L²T⁰].

• The moment of inertia for a given body is a constant even if the axis of rotation is changing.

Answer 1

The moment of inertia for a given body is a constant even if the axis of rotation is changing.

Explanation:

The moment of inertia of a given body is I = mr²

Thus M.I. of a body depends on the position of the axis of rotation and hence is not constant.