Question

A block of mass 30 kg is pulled up by a rope as shown in the figure with a constant speed

by applying a force of 200 N parallel to the slope. A and B are the initial and the final

positions of the block. Calculate the work done by the force in moving the block from A

to B.​

Answer 1

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Work is said to be done when a force is applied on a body and the body undergoes displacement. Work is product of force and displacement and it is measure in Joules (J).

Now it is given that :-

• Mass of block = 30kg
• Force applied = 200N
• Work done = ?

Now in the diagram we can see that the displacement of block is 3m.

Now the work done in moving the block will be :

$w = 200 \times 3 = 600j$

Therefore the work done is 600J.

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BY SCIVIBHANSHU

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