Question

Force in linear motion has its analog in rational motion?

• A. Moment of inertia
• B. Torque
• C. Angular momentum
• D. Weight

Answer 1

The correct option is B

Torque

The explanation for the correct options

1. The force can be defined as the push or pull on an object with mass that causes it to change its velocity.
2. Torque is the measure of the force that can cause an object to rotate about an axis. Force is what causes an object to accelerate in linear kinematics. Similarly, torque is what causes an angular acceleration. Hence, torque can be defined as the rotational equivalent of linear force.

The explanation for incorrect options

A. Moment of inertia

1. Moment of inertia is defined as the quantity expressed by the body resisting angular acceleration which is the sum of the product of the mass of every particle with its square of a distance from the axis of rotation.

C. Angular momentum

1. Angular momentum can be defined as the property of any rotating object given by moment of inertia times angular velocity.

D. Weight

1. Weight is the measure of the force of gravity acting on a body.

Force in linear motion has its analog in rational motion. Thus option B is the correct answer.