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Calculate the work done to take an objec...

Calculate the work done to take an object of mass 20 kg to a height of 10 m.

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TARGET PUBLICATION-WORK AND ENERGY-EXERCISE
  1. Questions based on paragraph Study the following activity and answer ...

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  2. Solve the following examples: Ravi applied a force of 10 N and moved ...

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  3. Calculate the work done to take an object of mass 20 kg to a height of...

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  4. Answer the following questions: Determine the amount of work done wh...

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  5. Pravin has applied a force of 100 N on an object, at an angle of 60^@ ...

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  6. A stone having a mass of 250 gm is falling from a height. How much kin...

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  7. Two bodies of same mass have their kinetic Ie energies in the ratio 9:...

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  8. A train approaching a station reduces its speed from 180 km/hr to 90 k...

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  9. The velocity of a car increases from 54 km/hr to 72 km/hr. How much is...

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  10. 500 kg water isstored in the overhead tank of a 10 m high building.Cal...

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  11. A man drops a 20 kg object from the top of a 10m high building . What ...

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  12. An object of mass 2 kg is thrown downwards. What is the work done by h...

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  13. Solve the following examples: If the energy of a ball falling from a ...

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  14. If a body possesses 980 joules of P.E. and 20 joules of K.E., then wha...

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  15. What is the power of an object which does 600 joules of work in 1 minu...

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  16. Swaralee takes 40 s to carry & bag weighing 20 kg to a height of 5 m. ...

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  17. Solve the following examples: An electric pump has 2 kW power. How mu...

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  18. A 25 W electric bulb is used for 10 hours every day. How much electric...

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  19. Solve the following examples: If a 1200 W electric iron is used daily...

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  20. An electric oven is rated 1600 W. How much energy (in kWh) does it use...

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