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Solve the following examples: Ravi appl...

Solve the following examples:
Ravi applied a force of 10 N and moved a book 30 cm in the direction of the force. How much was the work done by Ravi?

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NAVNEET PUBLICATION-WORK AND ENERGY-EXERCISE
  1. Give scientific reasons: A bicycle moving fast on a levelled road mov...

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  2. Differentiate between OR difference between: Kinetic energy and Poten...

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

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  4. Solve the following examples: A force of 20 N acts on a body. If the ...

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  5. Solve the following examples: A body of mass 0.1 kg thrown upward rea...

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  6. Solve the following examples: Ajit carries a load of 17 kg from the g...

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  7. Solve the following examples: When a force of 20 N acts on a body, th...

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  8. Solve the following examples: If the energy required to move a body ...

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

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  10. Solve the following examples: A body of mass 1 kg has kinetic energy ...

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  11. Solve the following examples: The velocity of a car increases from 54...

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  12. Solve the following examples: A man carrying a box of mass 20 kg clim...

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

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

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  15. Solve the following examples: Find the mass of water lifted by a pump...

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  16. Solve the following examples: An electric bulb of 40 W is used for 25...

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  17. Calculate the work done when a force of 60 N displaces a body through ...

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  18. When a force of 30 N acts on a body, the body is displaced by 10 m in ...

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  19. A body of mass 5 kg is lifted through a height of 20 m. Calculate the ...

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  20. If the energy of a ball falling from a height of 20 m is reduced by 60...

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