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A load of 100 kg is pulled up by 5 m. Ca...

A load of 100 kg is pulled up by 5 m. Calculate the work done. (`g = 9.8 m//s^(2)`)

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A body of mass 100 kg is lifted up by 10 m. Find : (i) the amount of work done. (ii) potential energy of the body at that height (value of g = 10 m//s^(2) ).

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LAKHMIR SINGH & MANJIT KAUR-WORK AND ENERGY-Exercise
  1. What is the kinetic energy of a body of mass 1 kg moving with a speed ...

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  2. Is potential energy a vector or scalar quantity ?

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

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

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  5. What happens to the potential energy of a body when its height is dou...

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  6. What kind of energy is possessed by the following ? (a) A stone kept...

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  7. Fill in the following blank with suitable words: (a) Work is measure...

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

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

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

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

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

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

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

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

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

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

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

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

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

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