Home
Class 11
PHYSICS
A block f mas 1 kg is placed at the poin...

A block f mas 1 kg is placed at the point A of a rough track shown in figure. If slightly pushed towards right, it stos at the point B of the track. Calculate the work done by the frictional force on the block during its transit from A to B.

Text Solution

Verified by Experts

The correct Answer is:
B

Given , `m=1kg, H=1m, h=0.8m`
Here work done by friction
`=change in P.E.
`rarr W_1=mgh-mgH `
`=1xx10xx(0.2)=-2J`
Promotional Banner

Topper's Solved these Questions

  • WORK AND ENERGY

    HC VERMA|Exercise Objective -2|2 Videos
  • WAVE MOTION AND WAVES ON A STRING

    HC VERMA|Exercise Exercises|57 Videos
HC VERMA-WORK AND ENERGY-Exercises
  1. A uniform chain of mass m and length l overhangs a table with its two ...

    Text Solution

    |

  2. AS uniform chain of length L and mass M overhangs a horizontal table w...

    Text Solution

    |

  3. A block f mas 1 kg is placed at the point A of a rough track shown in ...

    Text Solution

    |

  4. A block of mass 5.0 kg is suspended from the end of a vertical spring ...

    Text Solution

    |

  5. A block o fmass 250 is g is kept on a vertical spring of spring consta...

    Text Solution

    |

  6. Figure shows a spring fixed at the bottom end of an incline of inclina...

    Text Solution

    |

  7. A block of mass m moving at a speed v compresses as spring thrugh a di...

    Text Solution

    |

  8. Consider the situation shown in figure. Initially the spring is unstre...

    Text Solution

    |

  9. A block of mass m is attached to two unstretched springs of spring con...

    Text Solution

    |

  10. A block of mass m sliding n a smooth horizontal surface with velocity...

    Text Solution

    |

  11. A small block of mass 100 g is pressed again a horizontal spring fixed...

    Text Solution

    |

  12. A small hevy block is attached to the lower4 end of a light rod of len...

    Text Solution

    |

  13. Figure shows tow blocks A and B, each having a mass of 320 g connected...

    Text Solution

    |

  14. one end of a spring of naturla length ha and spring constant k is fixe...

    Text Solution

    |

  15. Figure shows a light rod of length l rigidly atached to a small heavy ...

    Text Solution

    |

  16. The bob of a pendulum at rest is given a sharp hit to impat a horizont...

    Text Solution

    |

  17. AS simple pendulum consists of a 50 cm long string connected to a 100 ...

    Text Solution

    |

  18. Figure shows a smooth track, a part of which is a circle of radus R. A...

    Text Solution

    |

  19. The bob of a stationary pendulum is given a sharp hit to impart it a h...

    Text Solution

    |

  20. A heavy particle is usspended by a 1.5 m long string . It is given a h...

    Text Solution

    |