Home
Class 12
PHYSICS
A block of mass m is directly pulled up ...

A block of mass m is directly pulled up slowly on a smooth inclined plane of height h and inclination `theta` with the help of a string parallel to the incline. Which of the following statement is incorrect for the block when it moves up from the bottom to the top the incline? . .

A

A work done by normal reaction force is zero

B

work done by the string is mgh

C

work done by gravity is mgh

D

total work done on the block is zero.

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • DAILY PRACTICE PROBLEM

    RESONANCE ENGLISH|Exercise DPP No.22|9 Videos

  • DAILY PRACTICE PROBLEM

    RESONANCE ENGLISH|Exercise DPP No.23|20 Videos

  • DAILY PRACTICE PROBLEM

    RESONANCE ENGLISH|Exercise DPP No.20|9 Videos

  • CURRENT ELECTRICITY

    RESONANCE ENGLISH|Exercise High Level Problems (HIP)|19 Videos

  • ELECTRO MAGNETIC WAVES

    RESONANCE ENGLISH|Exercise Exercise 3|27 Videos

Similar Questions

Explore conceptually related problems

A block of mass m is placed on a smooth inclined plane of inclination theta with the horizontal. The force exerted by the plane on the block has a magnitude

A block of mass m is placed on a smooth inclined plane of inclination theta with the horizontal. The force exerted by the plane on the block has a magnitude

A block of mass m moves with constant speed down the inclined plane of inclination theta . Find the coefficient of kinetic friction.

A block of mass 4 kg is pulled along a smooth inclined plane of inclination 30^(@) with constant velocity 3 m/s as shown, power delivered by the force is

An object of mass m is released from rest from the top of a smooth inclined plane of height h. Its speed at the bottom of the plane is proportional to

A block of mass m is kept on an inclined plane is angle inclination theta ( lt phi), where phi= angle of friction. Then :

A triangular prism of mass m placed on it is released from rest on a smooth inclined plane of inclination theta The block does not slip on the prism. Then

A horizontal force F is applied to a block of mass m on a smooth fixed inclined plane of inclination theta to the horizontal as shown in the figure. Resultant force on the block up the plane is:

A block is kept on an inclined plane of inclination theta of length l. the velocity of particle at the bottom of inclined is (the coefficient of friciton is mu )

A block is kept on a inclined plane of inclination theta of length l. The velocity of particle at the bottom of inclined is (the coefficient of friction is mu

RESONANCE ENGLISH-DAILY PRACTICE PROBLEM-DPP No.21
  1. The graph is showing the photocurrent with the applied voltage of a ph...

    Text Solution

    |

  2. If the atom(100)Fm^(257) follows the Bohr model the radius of (100)Fm^...

    Text Solution

    |

  3. A pulse of light of duration 100ns is absorbed completely by a small o...

    Text Solution

    |

  4. Which one the following statement is wrong , in the context of X - ray...

    Text Solution

    |

  5. The de-Broglie wavelength of a tennis ball of mass 60 g moving with a ...

    Text Solution

    |

  6. Shows the energy levels for an electron in a certain atom. Which trans...

    Text Solution

    |

  7. In a hydrogen like atom electron makes transition from an energy level...

    Text Solution

    |

  8. A block of mass m is directly pulled up slowly on a smooth inclined pl...

    Text Solution

    |

  9. The points 'A' and 'B' of a disc are pulled with velocity 'V' as shown...

    Text Solution

    |

  10. A car moves around a curve at a constant speed. When the car goes arou...

    Text Solution

    |

  11. A block of mass m starts at rest at height on a frictionless inclined ...

    Text Solution

    |

  12. Figure shows a smooth track, a part of which is a circle of radius r. ...

    Text Solution

    |

  13. A particle is revolving in a circle with increasing its speed uniforml...

    Text Solution

    |

  14. A system is shown in the figure. Block A moves with velocity 10m//s. T...

    Text Solution

    |

  15. The minimum work done required to accelerate a truck on a horizontal r...

    Text Solution

    |

  16. A block A with mass 100kg is resting on another block B of mass 200kg....

    Text Solution

    |

  17. A heavy particle of mass 1kg suspended from a massless string attached...

    Text Solution

    |

  18. Following statements are given for the motion of a particle along the ...

    Text Solution

    |

  19. Acceleration of pulleys and blocks are as shown in the figure. All pul...

    Text Solution

    |

  20. A wedge (inclination theta = 30^(@) from horizontal) is moving with an...

    Text Solution

    |