Question

A body is in translator equilibrium if:
(A) Resultant force on it is zero.
(B) It is at rest.
(C) It is in uniform motion.
(D) All options are correct.

Answer 1

Hint When an object is in equilibrium, it is in a state of being physically balanced, and disturbing it causes you to feel dizzy. Translational motion occurs when a body moves from one point to another. When you travel from home to work or school, your body is experiencing translational motion since it is moving between those two points.

Complete step by step answer:
Translational motion comes in picture when a body moves from one point to another.
A body can undergo translational motion (motion which changes its position) and rotational motion (motion which changes its angle).
A body is in translational equilibrium if the velocity of its translational motion is constant. A body that is not moving or a body that is moving in a straight line at a constant velocity would be considered in translation equilibrium. To be in translational equilibrium, the net force acting on the object must be zero (recall Newton's first law: if no unbalanced forces act on an object, it does not accelerate).
This can mean either the object is not moving, or it is moving at a constant velocity.

So it satisfies all the three condones therefore, option D is correct.

Note Under this category there comes two types of motion: Translational motion and Rotational motion. And we discussed Translation now; rotational motion occurs when a rigid body revolves around an axis. Examples of rotational motion would be a ceiling fan turning or a wheel spinning. We'll look at both types of motion and learn about the states of equilibrium associated with them.