One end of a light rope is tied directly to the ceiling. A man of mass $M$ initially at rest on the ground starts climbing the rope upto a height $l$ . From the time he starts at rest on the ground to the time he is hanging at rest at a height $l$ , how much work was done on the man by the rope?

0

No worries! We‘ve got your back. Try BYJU‘S free classes today!

M g l

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

- M g l

No worries! We‘ve got your back. Try BYJU‘S free classes today!

It depends on how fast the man goes up.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B $M g l$
Work done by rope is $T l$

As person is moving slowly $T = m g$

$\Rightarrow$ Work done by string $= M g l$

Suggest Corrections

Similar questions

A monkey of mass 15 kg is climbing on a rope with one end fixed to the ceiling. If it wishes to go up with an acceleration of 1 $m / s^{2}$ , how much force should it apply to the rope ? If the rope is 5m long and the monkey starts from rest, how much time will it take to reach the ceiling ?

Q. A monkey of mass 15 kg is climbing on a rope with one end fixed to the ceiling. If it wishes to go up with an acceleration 1 m/s

^{2}

, how much force should it apply to the rope if rope is 5 m long and the monkey starts from rest?

Q. A monkey of mass 15 kg is climbing a rope fixed to a ceiling. If it wishes to go up with an acceleration of 1 m/s², how much force should it apply on the rope? If the rope is 5 m long and the monkey starts from rest, how much time will it take to reach the ceiling?

Q. Figure (5−E21) shows a man of mass 60 kg standing on a light weighing machine kept in a box of mass 30 kg. The box is hanging from a pulley fixed to the ceiling by a light rope, the other end of which is held by the man himself. If the man manages to keep the box at rest, what is the weight recorded on the machine? What force should he exert on the rope to record his correct weight on the machine?

Figure

Q. Figure shows a man of mass

60 k g

standign on a light weighing machine dept in a box of mass

30 k g

. The box is hanging from a pulley fixed to the ceiling through a light rope, the other end of which is held by the man himself. If the man manages to keep the box at rest, what is the weight shown by the machine? What force should he exert on the rope to get his correct weight on the machine

Join BYJU'S Learning Program

One end of a light rope is tied directly to the ceiling. A man of mass M initially at rest on the ground starts climbing the rope upto a height l. From the time he starts at rest on the ground to the time he is hanging at rest at a height l, how much work was done on the man by the rope?

The correct option is B MglWork done by rope is Tl As person is moving slowly T=mg ⇒ Work done by string =Mgl

One end of a light rope is tied directly to the ceiling. A man of mass $M$ initially at rest on the ground starts climbing the rope upto a height $l$ . From the time he starts at rest on the ground to the time he is hanging at rest at a height $l$ , how much work was done on the man by the rope?

The correct option is B $M g l$
Work done by rope is $T l$

As person is moving slowly $T = m g$

$\Rightarrow$ Work done by string $= M g l$