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A force of 7N acts on an object. The dis...

A force of 7N acts on an object. The displacement is, say 8m, in the direction of the force, Let us take it that the force acts on the object throughout the displacement. What is the work done in this case ?

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A force of 7 N acts on an object. The displacement is, say 8 m, in the direction of the force (see Figure below). Let us take it that the force acts on the object through the displacement. What is the work done in this case ?

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MBD -HARYANA BOARD-WORK, ENERGY AND POWER-Example
  1. A force of 7N acts on an object. The displacement is, say 8m, in the d...

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  2. When do we say that work is done ?

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  3. Write an expression for the work done when a force is acting on an obj...

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  4. A pair of bullocks exerts a force of 140 N on a plough. The field bei...

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  5. A pair of bullocks exerts a force of 140 N on a plough. The field bei...

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  6. Define 1 J of work.

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  7. What is the kinetic energy of an object ?

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  8. Write an expression for kinetic energy of an object.

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  9. The kinetic energy of an object of mass m moving with a velocity of 5 ...

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  10. What is power ?

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  11. Define 1watt of Power.

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  12. A lamp consumes 1000 J of electrical energy is 10 s. What is its power...

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  13. Define Average Power.

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  14. Look at the activities listed below. Reson out whether or not work is ...

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  15. Look at the activites listed below. Reason out whether or not work is ...

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  16. Look at the activities listed blew. Reson out whether or not work is d...

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  17. Look at the activites listed below. Reason out whether or not work is ...

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  18. Look at the activites listed below. Reason out whether or not work is ...

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  19. Look at the activites listed below. Reason out whether or not work is ...

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  20. An object thrown at a certain angle to the ground moves in a curved pa...

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