Home
Class 9
PHYSICS
Each of the following statement describe...

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

A

the weight of a book at rest on a table

B

the pull of a moving railway engine on its coaches

C

the tension in an elastic band wrapped around a parcel

D

the push of a person's feet when standing on the floor

Text Solution

Verified by Experts

The correct Answer is:
B
NA
Promotional Banner

Topper's Solved these Questions

  • WORK AND ENERGY

    LAKHMIR SINGH & MANJIT KAUR|Exercise Long Answer Type Questions|2 Videos

  • WORK AND ENERGY

    LAKHMIR SINGH & MANJIT KAUR|Exercise Multiple Choice Questions|1 Videos

  • WORK AND ENERGY

    LAKHMIR SINGH & MANJIT KAUR|Exercise Multiple Choice Questions|1 Videos

  • SOUND

    LAKHMIR SINGH & MANJIT KAUR|Exercise Value Based Questions|20 Videos

Similar Questions

Explore conceptually related problems

Which of the following statements is true for work done by conservative forces :–

(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?

What causes force to act?

In which of the following, the work done by the mentioned force is negative ? The work done by

Work done by a spning force is

In which of the following cases no work is done by the force?

State the following statements as true or false. a. The work done by a force on a body is equal to the dot product of the force and displacement of the body. b. Instantaneously, work is not defined. c. When several forces act on a body, the total work is the same as the work done by their resultant.

Work done by a frictional force is

LAKHMIR SINGH & MANJIT KAUR-WORK AND ENERGY-Exercise
  1. Water stored in a dam possesses

    Text Solution

    |

  2. The momentum of a bullet of mass 20 g fired from a gun is 10 kg.m/s. T...

    Text Solution

    |

  3. Each of the following statement describes a force acting. Which force ...

    Text Solution

    |

  4. A girl weighing 400 N climbs a vertical ladder. If the value of g be 1...

    Text Solution

    |

  5. Which of the following does not possess the ability to do work not bec...

    Text Solution

    |

  6. A stone is thrown upwards as shown in the diagram. When it reaches P, ...

    Text Solution

    |

  7. A boy tries to push a truck parked on the roadside. The truck does not...

    Text Solution

    |

  8. The work done by a force acting obliquely is given by the formula : W ...

    Text Solution

    |

  9. What should be the angle between the direction of motion of a body so ...

    Text Solution

    |

  10. In which of the following case of work done by a force will be maximum...

    Text Solution

    |

  11. How much work is done by the gravitational force of earth acting on a ...

    Text Solution

    |

  12. A man is instructed to carry a package from the base camp at B to summ...

    Text Solution

    |

  13. When a ball is thrown vertically upwards, its velocity goes on decreas...

    Text Solution

    |

  14. A man X goes to the top of a building by a vertical spiral staircase....

    Text Solution

    |

  15. When a ball is thrown inside a moving bus, does its kinetic energy dep...

    Text Solution

    |

  16. A bullet of mass 15 g has a speed of 400 m/s. What is its kinetic ener...

    Text Solution

    |

  17. COMMERCIAL UNIT OF ENERGY

    Text Solution

    |

  18. One kilowatt-hour is equal to :

    Text Solution

    |

  19. Name two units of power bigger than watt.

    Text Solution

    |

  20. Define the term 'watt'.

    Text Solution

    |