Home
Class 11
PHYSICS
A block of 1 kg is kept on a rough surfa...

A block of 1 kg is kept on a rough surface of an elevator moving up with constant velocity of 5 m/s. In 10 second work done by normal reaction (no sliding on incline surface)
(i) from ground frame is 320 J
(ii) is equal to work done by friction force in elevator frame
(iii) is equal to work done by friction in ground frame

A

(i)

B

(ii), (iii)

C

(i), (ii)

D

only (iii).

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • WORK, ENERGY AND POWER

    PHYSICS GALAXY - ASHISH ARORA|Exercise unsolvedMCQ|78 Videos

  • WORK, ENERGY AND POWER

    PHYSICS GALAXY - ASHISH ARORA|Exercise unsolved|1 Videos

  • WORK, ENERGY AND POWER

    PHYSICS GALAXY - ASHISH ARORA|Exercise Discussion Question|31 Videos

  • RIGID BODIES AND ROTATIONAL MOTION

    PHYSICS GALAXY - ASHISH ARORA|Exercise Unsolved Numerical|63 Videos

Similar Questions

Explore conceptually related problems

A small block of mass 1 kg is kept on a rough inclined wedge of inclination 45^@ fixed in an elevator. The elevator goes up with a uniform velocity v=2 m//s and the block done not slide on the wedge. Find the work done by the of friction on the block in 1s . (g=10 m//s^(2))

Find total work done by friction assuming plank is sufficiently long. Solve this question in both ground frame and C-frame.

A small block of mass m is kept on a rough inclined surface of inclination theta fixed in an elevator. The elevator goes up with a uniform velocity v and te block does not slide n te wedge. The work done by the force of friction on the block in time t will be

A small block of mass 2kg is kept on a rough inclined surface of inclination theta=30^@ fixed in a lift. The lift goes up with a uniform speed of 1ms^-1 and the block does not slide relative to the inclined surface. The work done by the force of friction on the block in a time interval of 2s is

A block of mass 4 kg slides down a plane inclined at 37^(@) with the horizontal. The length of plane is 3 m. find work done by normal force , gravity and frictional force .

A block of mass 10 kg is released on a fixed wedge inside a cart which is moving with constant velocity 10 ms^(-1) towards right. There is no relative motion between block and cart. Then work done by normal reaction on block in two seconds from ground frame will be ( g=10 ms^(-2) )

A block of mass m is kept on a rough horizontal surface. It is moved through a distance (s) by applyig a force F in the horizontal direction. What is the work done by the normal reaction?

PHYSICS GALAXY - ASHISH ARORA-WORK, ENERGY AND POWER-MCQ
  1. The kinetic energy acquired by a mass m travelling a certain distance ...

    Text Solution

    |

  2. A block ofmass m is attached with a spring in its natural length, of s...

    Text Solution

    |

  3. A block of 1 kg is kept on a rough surface of an elevator moving up wi...

    Text Solution

    |

  4. A particle is projected with speed u at angle theta to the horizontal....

    Text Solution

    |

  5. A small coin of mass 80g is placed on the horizontal surface of a rota...

    Text Solution

    |

  6. A force F=-K(yhati+xhatj) (where K is a positive constant) acts on a p...

    Text Solution

    |

  7. A particle moves with a speed v in a circle of radius R.The x-componen...

    Text Solution

    |

  8. An agent applies force of constant magnitude F(0) always in the tangen...

    Text Solution

    |

  9. A block Q of mass 2m is placed on a horizontal frictionless plane. A s...

    Text Solution

    |

  10. A man pulls a bucket of water from a depth of h from a well. If the ma...

    Text Solution

    |

  11. Under the action of a force, a 2 kg body moves such that its position ...

    Text Solution

    |

  12. A smooth ring of mass M is threaded on a string whose ends are then th...

    Text Solution

    |

  13. A particle is kept fixed on a turntable rotating uniformly. As seen fr...

    Text Solution

    |

  14. A cube of mass M starts of rest from point 1 at a height 4R, where R i...

    Text Solution

    |

  15. A block is attached to a spring of stiffness k. The other end of the s...

    Text Solution

    |

  16. A heavy body of mass 25kg is to be dragged along a horizontal plane (...

    Text Solution

    |

  17. A block of mass m is placed at the top of a smooth wedge ABC. The wedg...

    Text Solution

    |

  18. The work done in moving a particle from a point (1,1) to (2,3) in a pl...

    Text Solution

    |

  19. A particles of mass m is fixed to one end of a light spring of force c...

    Text Solution

    |

  20. A simple pendulum having bob of maas m is suspended from the ceiling o...

    Text Solution

    |