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Can every force do work?...

Can every force do work?

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MODERN PUBLICATION-WORK AND ENERGY-EXERCISE
  1. When you are climbing stairs, work done by the weight is positive. (T ...

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  2. The ratio S.I unit to C.G.S. unit of work is .

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  3. Can every force do work?

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  4. When work is done on a body then kinetic energy of the body. (increase...

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  5. A book falls freely from the table top. Is work done by some force dur...

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  6. A boy sitting in a moving car possesses kinetic energy.

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  7. If momentum of a body is doubled, the kinetic energy becomes times.

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  8. Is energy a scalar or a vector quantity? Why?

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  9. What are the various forms of energy? Give some examples of each.

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  10. Define Kinetic energy. Give one example.

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  11. A boy of mass 18 kg is running with a speed of 12 km/h. Find the kinet...

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  12. Given that the kinetic energy of an object is 100 J. If the mass of ob...

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  13. A stationary football is kicked by a player such that it attains a spe...

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  14. Find the work done in in reasing the speed of car from 18 kmh^-1 to 36...

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  15. What is the force required to lift a book of mass m? This force is req...

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  16. What happens to the potential energy if the height of a body is double...

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  17. Give two example of bodies possessing gravitational P.E.

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  18. Give two example of bodies possessing elastic P.E.

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  19. Define potential energy. Derive an expression for it. On what factors ...

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  20. A body of mass 6 kg is kept at a height of 5 m from the surface of ear...

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