Physics - W.E.P. Question with Solution | TestHub

PhysicsW.E.P.Conservative force & potential energyMedium2 minQB

PhysicsMediumsingle choice

Passage / Comprehension

A gentleman sits on a platform and raises himself by a rope and pulley arrangement as shown in figure. Assuming that pulley and ropes are ideal and friction is absent everywhere, by pulling the rope the system goes up. Mass of the man is 80 kg and of the platform is 120 kg, and the system goes up with constant velocity.

If man goes up by height of 3m then potential energy of (man + platform) system increased by.

Options:

Answer:

Solution:

$Δ PE = (80 + 120) \times 10 \times 3 = 6000 J = 6 kJ$

Ans. (A)

Stream:JEESubject:PhysicsTopic:W.E.P.Subtopic:Conservative force & potential energy

⏱ 2mℹ️ Source: QB

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