Home
Class 12
PHYSICS
A block of mass m is sliding down an inc...

A block of mass m is sliding down an inclined plane with constant speed. At a certain instant t0, its height above the ground is h. The coefficient of kinetic friction between the block and the plane is `mu`. If the block reaches the ground at a later instant `t_g`, then the energy dissipated by friction in the time interval `(t_(g)-t_(0))` is -

A

`mu mgh`

B

`mumg h// sin theta`

C

mgh

D

`mumgh//cos theta`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • KVPY 2021

    KVPY PREVIOUS YEAR|Exercise PART I (Chemistry)|2 Videos

Similar Questions

Explore conceptually related problems

A block of mass m sliding down an inclined at constant speed is initial at a height h shown the ground as shown in the figure above . The coefficient of kinetic friction between the mass and the inclined is mu . If the mass constinues to slide down the inclined at a constant speed how much energy is displaced by friction by the time the mass reaches the bottom of the incline?

A block of mass m slides down an inclined plane which makes an angle theta with the horizontal. The coefficient of friction between the block and the plane is mu . The force exerted by the block on the plane is

A block of mass m slides down an inclined plane of inclination theta with uniform speed The coefficient of friction between the block and the plane is mu . The contact force between the block and the plane is .

A block of mass m slides down an inclined plane of inclination theta with uniform speed. The coefficient of friction between the block and the plane is mu . The contact force between the block and the plane is

A block sliding down on a rough 45^(@) inclined planes has half the velocity it would have been, the inclined plane is smooth. The coefficient of sliding friction between the the block and the inclined plane is

A block of mass m slides down a rough inclined plane of inclination theta with horizontal with zero initial velocity. The coefficient of friction between the block and the plane is mu with theta gt tan^(-1)(mu) . Rate of work done by the force of friction at time t is

A block is at rest at the top of a rough inclined plane of inclination 30° with the horizontal. What is the coefficient of kinetic friction between the block and the plane, if the . block slides down with an acceleration of g/5 ?

A block slides down a curved frictionless track and then up an inclined plane as in figure. The coefficient of kinetic friction between the block and incline is mu_k . Find the maximum height reached by the clock.

KVPY PREVIOUS YEAR-KVPY-All Questions
  1. In the circuit shown, n identical resistors R are connected in paralle...

    Text Solution

    |

  2. A firecracker is thrown with velocity of 30 ms^(-1) in a direction whi...

    Text Solution

    |

  3. A block of mass m is sliding down an inclined plane with constant spee...

    Text Solution

    |

  4. A circular loop of wire s in the same plane as an infinitely long wire...

    Text Solution

    |

  5. 150 g of ice is mixed with 100 g of water at temperature 80^(@)C. The...

    Text Solution

    |

  6. An ideal monatomic gas expands to twice its volume. If the process is ...

    Text Solution

    |

  7. The capacitor of capacitance C in the circuit shown in fully charged ...

    Text Solution

    |

  8. A liquid drop placed on a horizontal plane has a near spherical shape ...

    Text Solution

    |

  9. Seven identical coins are rigidly arranged on a flat table in the patt...

    Text Solution

    |

  10. A planet orbits in an elliptical path of eccentricity e around a massi...

    Text Solution

    |

  11. In a Young's double slit experiment the intensity of light at each sli...

    Text Solution

    |

  12. A loop carrying current I has the shape of a regular polygon of n side...

    Text Solution

    |

  13. A conducting rod of mass m and length l is free to move without fricti...

    Text Solution

    |

  14. A steady current I flows through a wire of radius r, length L and resi...

    Text Solution

    |

  15. The ratio of the speed of sound to the average speed of an air molecul...

    Text Solution

    |

  16. In one model of the electron, the electron of mass me is thought to ...

    Text Solution

    |

  17. A body is executing simple harmonic motion of amplitude a and period T...

    Text Solution

    |

  18. Two identical bodies are made of a material for which the heat capacit...

    Text Solution

    |

  19. A particle is acted upon by a force given by F = - alphax^(3) -betax^...

    Text Solution

    |

  20. The potential energy of a point particle is given by the expression V(...

    Text Solution

    |