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A constant force of 1 N is applied on an object. The body displaces 1 m in the direction of the force. Then work done is ……………. J

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A force of 5 N is acting on an object. The object is displaced through 2m in the direction of force. If the force acts on the object all through the displacement, then find the work done on the object.

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A body of mass 2 kg is rest on a smooth horizontal surface . When a horizontal force of 0.5 N acts on this bofy it is displaced in the direction of the force . Find the work done by the force in 8.0 s .Show that this work is equal to the change in kinetic energy of the body .

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KUMAR PRAKASHAN-WORK AND ENERGY -QUESTION & ANSWER (FILL IN THE BLANKS)
  1. 1 watt-second = ……….. Joule.

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  2. A stone of mass 20g is tied to one end of a strong string by a boy. He...

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  3. An object of mass 120g is taken upward at the height 5 m, then ………….. ...

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  4. Hetal having mass 50 kg climbs up 20 m height with an object of mass 3...

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  5. The gravitational acceleration on moon is one-sixth that on the earth....

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  6. An electric bulb of 60 W is used for 10 h per day ………….. Unit of elect...

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  7. A object of weight 40 N is made to fall freely towards the ground from...

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  8. 3730 watt = hp

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  9. A constant force of 1 N is applied on an object. The body displaces 1 ...

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  10. 1 watt-second = ……….. Joule.

    Text Solution

    |

  11. A stone of mass 20g is tied to one end of a strong string by a boy. He...

    Text Solution

    |

  12. An object of mass 120g is taken upward at the height 5 m, then ………….. ...

    Text Solution

    |

  13. Hetal having mass 50 kg climbs up 20 m height with an object of mass 3...

    Text Solution

    |

  14. The gravitational acceleration on moon is one-sixth that on the earth....

    Text Solution

    |

  15. An electric bulb of 60 W is used for 10 h per day ………….. Unit of elect...

    Text Solution

    |

  16. A object of weight 40 N is made to fall freely towards the ground from...

    Text Solution

    |

  17. 3730 watt = hp

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    |

  18. A constant force of 1 N is applied on an object. The body displaces 1 ...

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    |