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A body is displaced by 20 m, when a force of 20N acts on the body. The work done is 
Asked by Reetusahrey | 07 Feb, 2019, 07:36: PM
answered-by-expert Expert Answer
Work done = F× s
Where F is the force applied and s is the displacement produce by this force
So Work done W = 20×20 = 400 Joule
Answered by Ankit K | 08 Feb, 2019, 10:26: AM
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JEE main - Physics
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Asked by nandichandi33 | 24 Mar, 2024, 09:21: PM
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JEE main - Physics
The work done in moving a body of mass m up an inclined plane of inclination θ to the horizontal, height h and length l ( no friction ) are related as
Asked by sarthakbhoskar7630 | 05 Mar, 2024, 07:03: PM
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JEE main - Physics
A uniform rod of length L and mass M has been placed on a rough horizontal surface. The force F applied on the rod is such that the rod is such that the rod is just in the state of rest. If the coefficient of friction varies according to the relation μ=KX, where K is a positive constant. Suppose friction is present only from X=0 to X=L. If the rod moves in the direction of application of force then the total heat generated in the time in which the rod crosses this region, is equal to
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JEE main - Physics
A wooden block weighing 80 N rests on a rough horizontal plane, the coefficient of friction between the two being µ=0.4. If a bullet weighing 0.4 N is fired horizontally in to the block with muzzle velocity v= 500 m/s, how far will the block be displaced from its initial position? Assume that the bullet remains inside the block.
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JEE main - Physics
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JEE main - Physics
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Asked by vishal.vini86 | 22 Apr, 2022, 12:06: AM
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JEE main - Physics
Two identical small balls A and B each of mass m connected by a light inextensible string of length l are placed on a frictionless horizontal floor. With what velocity u must the ball B be projected vertically upwards so that the ball A leaves the floor?
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JEE main - Physics
a man drags a block through 10m on rough surface (mew=0.5). A force of root3 kN acting at 30 to the horizontal . the work done by applied force is
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