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How much work is done when a body of mas...

How much work is done when a body of mass m is raised to a height h above the ground?

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`m xx g xx h`
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LAKHMIR SINGH & MANJIT KAUR-WORK AND ENERGY-Exercise
  1. How much work is done when a body of mass m is raised to a height h ab...

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  2. Derive the SI unit of work.

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  3. Is work a scalar quantity or a vector quantity ?

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  4. Define 1 J of work.

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  5. What is the condition for a force to do work on a body ?

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  6. Is energy a vector quantity ?

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  7. what are the units of work and energy ?

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  8. What is the work done against gravity when a body is moved horizontall...

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  9. By now much will the kinetic energy of a body increase if its speed is...

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  10. What do you mean by kinetic energy ? Derive an expression for the kine...

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  11. If the speed of body is halved, what will be the change in its kinetic...

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  12. On what factors does the kinetic energy of a body depend ?

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  13. Which would have a greater effect on the kinetic energy of an object :...

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  14. How fast should a man of 50 kg run so that his kinetic energy be 625 J...

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  15. State whether the following objects possess kinetic energy, potential ...

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  16. two bodies A and B of equal masses are kept at heights of h and 2h res...

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  17. What is the kinetic energy of a body of mass 1 kg moving with a speed ...

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  18. Is potential energy a vector or scalar quantity ?

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  19. A load of 100 kg is pulled up by 5 m. Calculate the work done. (g = 9....

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  20. State whether the following statement is true or false : The potenti...

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