Home
Class 9
PHYSICS
(a) Which of the following does the most...

(a) Which of the following does the most work : a force of 3N acting through a distance of 3 m or a force of 4N acting through a distnace of 2m?
(b) How much work is done by the centripetal force?

Text Solution

Verified by Experts

(a) Force of 3N acting through 3m as 3 N xx3m = 9J and 4N xx2m = 8J.
(b) Zero as the cantripetal force is always perpendicular to displacement.
Promotional Banner

Topper's Solved these Questions

  • WORK AND ENERGY

    PRADEEP|Exercise Assessment Through paper pen Test|30 Videos

  • WORK AND ENERGY

    PRADEEP|Exercise Continuous Assessment I oral testing|10 Videos

  • WORK AND ENERGY

    PRADEEP|Exercise Problems for Practice|30 Videos

  • SOUND

    PRADEEP|Exercise Model Test (sec - B)|12 Videos

Similar Questions

Explore conceptually related problems

Fill In the blanks: 1 __ is the amount of work done by a force of 1 N acting through a distance of 1 __ 'in the direction of the force ..

How much work in Joule is done by a force of 4 N is moving a body through a distance of 2 m in its own direction ?

Each of the following statement describes a force acting. Which force is causing work to be done ?

How much work is done when a force of 1 N moves a body through a distance of 1 m in its own direction ?

Using a force of 20N, a person pushes a shopping cart 8 m. How much work does the person do?

How much work is done by a force of 10 N in moving an object through a distance of 1 m in the direction of the force ?

A body acted upon by a force of 50N is displaced through a distance of 10m in a direction making an angle of 60^(@) with the force. Calculate the work done by the force.

A box is pushed through 4.0 m across floor offering 100 N resistance.How much work is done by the resisting force?

PRADEEP-WORK AND ENERGY-Continuous Assessment
  1. Compare the kinetic energies of two idential objects A and B when velo...

    Text Solution

    |

  2. A fountain of water shoots high in air. What probvides the force that ...

    Text Solution

    |

  3. What is meant by kinetic energy?

    Text Solution

    |

  4. What do you mean by dissipation of energy ?

    Text Solution

    |

  5. What is 1 MJ ?

    Text Solution

    |

  6. What is the origin of the word "kinetic"?

    Text Solution

    |

  7. (a) Which quantity provides a link between force and energy ? (b) ...

    Text Solution

    |

  8. (a) What is the cause of kinetic energy possessed by a body? (b) can...

    Text Solution

    |

  9. (a) Compare the kinetic energies of two identical bodies, one moving n...

    Text Solution

    |

  10. (a) Which of the following does the most work : a force of 3N acting t...

    Text Solution

    |

  11. (a) How is the energy of an object measured? (b) What does work - en...

    Text Solution

    |

  12. When is the work done by gravity negative ?

    Text Solution

    |

  13. What happens when a body performs work?

    Text Solution

    |

  14. How can you visualize a joule of energy ?

    Text Solution

    |

  15. An object has velocity toward south if a force is directed toward the ...

    Text Solution

    |

  16. Two objects have different masses but the same kinetic energy. If you ...

    Text Solution

    |

  17. A person pushes a 72 kg patient on a 15 kg trolley, producing an accel...

    Text Solution

    |

  18. A truck moving at 15m//s has KE of 4.2xx10^5 J (a) what is the mass of...

    Text Solution

    |

  19. How much work is required for a 74Kg sprinter to acclerate from rest t...

    Text Solution

    |

  20. A woman lifts a box weighing 40N from the floor to a shelf 1.5 m above...

    Text Solution

    |