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Is it possible that a force is acting on...

Is it possible that a force is acting on a body but still work done is zero? Explain giving one example.

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MODERN PUBLICATION-WORK AND ENERGY-EXERCISE
  1. How are fuels such as coal and petroleum formed?

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  2. The velocity of a body moving in a straight line is increased by apply...

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  3. Is it possible that a force is acting on a body but still work done is...

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  4. Two bodies of equal masses move with uniform velocities v and 3v respe...

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  5. Define 1 watt.

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  6. An electric bulb of 60 W is used for 6 hours per day. Calculate the un...

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  7. Define work. Give its SI and CGS unit. What is the relationship betwee...

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  8. Give an example for force acting in the direction of displacement.

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  9. Give an example for force acting against the direction of displacement...

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  10. Deifne potential energy. On what factors does potential energy depends...

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  11. A body is thrown vertically upwards with a speed u. When does its pote...

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  12. A body is thrown vertically upwards with a speed u. When does kinetic ...

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  13. A body is thrown vertically upwards with a speed u. When does P.E. = K...

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  14. Two girls, each of weight 400 N climb up a rope through a height of 8 ...

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  15. A mass of 10 kg is dropped form a height of 50 cm. Find its potential ...

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  16. A mass of 10 kg is dropped form a height of 50 cm. Find its kinetic en...

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  17. A mass of 10 kg is dropped form a height of 50 cm. Find its velocity w...

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  18. A ball of mass 0.5 kg slows down from a speed of 5ms^-1 to 3ms^-1, cal...

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  19. Which would have greater effect on the kinetic energy of an object-dou...

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  20. Name the energy transformation taking place in the following devices: ...

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