A heavy block at rest is suspended by a vertical rope.When the block is raised at constant velocity,the rope tension
A)is less than its weight.
B)equals its weight.
C)is greater than its weight.

Question

Quizplus · Accepted Answer

When the block is raised at constant velocity, it is in a state of equilibrium. This means that the net force acting on it is zero. The tension in the rope must be equal in magnitude and opposite in direction to the weight of the block for this equilibrium to be maintained. Therefore, the rope tension equals the weight of the block.

A Heavy Block at Rest Is Suspended by a Vertical