An object in mechanical equilibrium is an object
A)moving with constant velocity.
B)having no changes in velocity.
C)at rest.
D)all of the above

Question

Quizplus · Accepted Answer

An object in mechanical equilibrium means that the net force acting on the object is zero. This can occur in three scenarios: 
1) If the object is at rest, the net force is zero and there is no acceleration.
2) If the object is moving with constant velocity, the net force is zero because there is no acceleration.
3) If there are multiple forces acting on the object but they cancel out each other, the net force is zero and the object is in equilibrium. Therefore, all of the above choices (A, B, and C) describe an object in mechanical equilibrium.

An Object in Mechanical Equilibrium Is an Object