Home
Class 12
PHYSICS
A man of mass 50 kg is standing in an el...

A man of mass 50 kg is standing in an elevator. If elevator is moving up with an acceleration `(g)/(3)` then work done by normal reaction of elevator floor on man when elevator moves by a distance 12 m is `(g=10 m//s^(2))`:-

A

2000 J

B

4000 J

C

6000 J

D

8000 J

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • WORK, ENERGY AND POWER

    AAKASH INSTITUTE|Exercise Assignment (SECTION - A)|67 Videos

  • WORK, ENERGY AND POWER

    AAKASH INSTITUTE|Exercise Assignment (SECTION - B)|39 Videos

  • WORK, ENERGY AND POWER

    AAKASH INSTITUTE|Exercise SECTION-J (AAKASH CHALLENGERS QUESTIONS)|14 Videos

  • WAVES

    AAKASH INSTITUTE|Exercise ASSIGNMENT ( SECTION-D ( Assertion - Reason Type Questions ))|12 Videos

Similar Questions

Explore conceptually related problems

A man of mass m is standing in an elevator moving downward with an acceleration (g)/(4) . The force exerted by the bottom surface of the elevator on the man will be

A man (mass =50 kg) is in an elevtor with is moving with acceleration 0.49 m//s^(2) upwards. Find normal reaction exerted by man on floor of the elevator.

A man of mass 75 kg is standing in an elevator which is moving with an acceleration of 5 m//s^2 in upward direction.The apparent weight of the man will be (g=10 m//s^2)

A man of weight 80 kg is standing in an elevator which is moving with an acceleration of 6m//s^(2) in upward direction. The apparent weight of the man will be (g=10m//s^(2))

Consider an elevator moving downwards with an acceleration a, the force exerted by a passenger of mass m on the floor of the elevator is :

In an elevator moving vertically up with an acceleration g, the force exerted on the floor by a passanger of mass M is

An elevator is moving vertically up with a acceleration a the force exerted on the floor by a passenger of mass m is

A man of mass 90kg is standing in an elevator whose cable broke suddenly. If the elevator falls, apparent weight of the man is:

Two blocks of masses 2 kg and 4 kg are hanging with the help of massless string passing over an ideal pulley inside an elevator. The elevator is moving upward with an acceleration (g)/(2) . The tension in the string connected between the blocks will be (Take g=10m//s^(2) ).

AAKASH INSTITUTE-WORK, ENERGY AND POWER-EXERCISE
  1. A block of mass 2 kg is plased on a smooth horizontal surface. Two for...

    Text Solution

    |

  2. A position dependent force F ia acting on a particle and its force-pos...

    Text Solution

    |

  3. A man of mass 50 kg is standing in an elevator. If elevator is moving ...

    Text Solution

    |

  4. A particle moves along x - axis under the action of a position depende...

    Text Solution

    |

  5. What should be the angel between the direction of force and displaceme...

    Text Solution

    |

  6. A body constrained to move along y-axis is subjected to a constant for...

    Text Solution

    |

  7. A cubical vessel of height 1 m is full of water. What is the workdone ...

    Text Solution

    |

  8. A person pulls a bucket of water from a well of depth h. if the mass ...

    Text Solution

    |

  9. Force constants K(1) and K(2) of two springs are in the ratio 5:4. The...

    Text Solution

    |

  10. Two springs have their force constants in the ratio of 3:4. Both the s...

    Text Solution

    |

  11. A block of mass m is released on the top of a smooth inclined plane of...

    Text Solution

    |

  12. A particle of mass 3 kg is moving along x - axis and its position at t...

    Text Solution

    |

  13. A force vecF=(2hati+hatj+hatk)N is acting on a particle moving with co...

    Text Solution

    |

  14. Potential energy of a particle at position x is given by U=x^(2)-5x. W...

    Text Solution

    |

  15. A block of mass 4 kg is pulled along a smooth inclined plane of inclin...

    Text Solution

    |

  16. A stone is tied to one end of a light inexensible string of length l a...

    Text Solution

    |

  17. From a waterfall, water is falling down at the rate of 100kg / s on th...

    Text Solution

    |

  18. A body is being moved from rest along a straight line by a machine del...

    Text Solution

    |

  19. In perfectly elastic collision between two masses m(1)and m(2) in one ...

    Text Solution

    |

  20. A ball of mass mis released from the top of an inclined plane of incl...

    Text Solution

    |