In figure, a force of magnitude F acts on the free end of the cord. If the weight is move up slowly by a distance h. How much work is done on the weight by the rope connecting pulley and weight?

Question

In figure, a force of magnitude F acts on the free end of the cord. If the weight is move up slowly by a distance h. How much work is done on the weight by the rope connecting pulley and weight? <img class="img-fluid question-image" alt="image" src="https://cdn.tardigrade.in/img/question/physics/16f81309c414ee7b3ef7dc36c31fab8f-.png" /> (A) Fh (B) 2Fh (C) Fh/2 (D) None of these

Tardigrade Admin · Accepted Answer

We applying force F therefore tension in string is T = F. Hence force acting on weight is 2F upward, and displacement is h upward. Hence W = 2Fh (work done on weight)

Q. In figure, a force of magnitude $F$ acts on the free end of the cord. If the weight is move up slowly by a distance $h$ . How much work is done on the weight by the rope connecting pulley and weight?

Fh

2Fh

Fh/2

None of these

We applying force $F$ therefore tension in string is $T = F$ .
Hence force acting on weight is $2 F$ upward, and displacement is $h$ upward.
Hence $W = 2 F h$ (work done on weight)

Q. In figure, a force of magnitude F acts on the free end of the cord. If the weight is move up slowly by a distance h. How much work is done on the weight by the rope connecting pulley and weight?

Fh

2Fh

Fh/2

None of these

We applying force F therefore tension in string is T=F. Hence force acting on weight is 2F upward, and displacement is h upward. Hence W=2Fh (work done on weight)

Q. In figure, a force of magnitude $F$ acts on the free end of the cord. If the weight is move up slowly by a distance $h$ . How much work is done on the weight by the rope connecting pulley and weight?

We applying force $F$ therefore tension in string is $T = F$ .
Hence force acting on weight is $2 F$ upward, and displacement is $h$ upward.
Hence $W = 2 F h$ (work done on weight)