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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 the work done is zero ? Explain giving one example.

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LAKHMIR SINGH & MANJIT KAUR-WORK AND ENERGY-Exercise
  1. Fill in the following blank with suitable words: (a) Work is measure...

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  2. What are the quantities on which the amount of work done depends ? How...

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

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  4. A boy throws a rubber ball vertically upwards. What type of work, posi...

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  5. Write the formula for work done on a body when the body moves at an an...

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  6. How does the kinetic energy of a moving body depend on its (i) speed, ...

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  7. What is meant by positive work, negative work and zero work ? Illustra...

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  8. A ball of mass 200 g falls from a height 5 metres. What is its kinetic...

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  9. Find the momentum of a body of mass 100 g having a kinetic energy of 2...

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  10. Two objects having equal masses are moving with uniform velocities of ...

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  11. A body of 2 kg falls from rest. What will be its kinetic energy during...

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  12. On a level road, a scooterist applies brakes to slow down from a speed...

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  13. A man drops a 10 kg rock from the top of a 5 m ladder. What is its spe...

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  14. Calculate the work done by the brakes of a car of mass 1000 kg when it...

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  15. A body of mass 100 kg is lifted up by 10 m. Find : (i) the amount of...

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  16. A boy weighing 50 kg climbs up a vertical height of 100 m. Calculate t...

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  17. What is the work done by a constant force ? When is it positive, negat...

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  18. To what height should a box of mass 150 kg be lifted, so that its pote...

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  19. A body of mass 2 kg is thrown vertically upwards with an initial veloc...

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  20. How much work is done when a force of 1 N moves a body through a dista...

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