A bucket of cement is raised by a rope at constant speed at a construction site.Compared with the force of gravity on the bucket,the upward force supplied by the rope is
A)greater.
B)equal.
C)less.

Question

Quizplus · Accepted Answer

According to Newton's Third Law, the force exerted by the bucket on the rope is equal and opposite to the force exerted by the rope on the bucket. Therefore, the upward force supplied by the rope is equal in magnitude to the force of gravity on the bucket, making the answer B, equal.

A Bucket of Cement Is Raised by a Rope at Constant