Home
Class 11
PHYSICS
The elevator can carry a maximum load of...

The elevator can carry a maximum load of 2800 kg (elevator +passengers) is moving up with a constant speed of `2ms^(-1)`. The frictional force opposing the motion is 5000 N .Determine the minimum power delivered by the motor to the elevator in watts as well as in horse power .

Text Solution

Verified by Experts

`P = 99000 W , 132.7 hp`
Promotional Banner

Topper's Solved these Questions

  • WORK, ENERGY AND POWER

    KUMAR PRAKASHAN|Exercise SECTION - B Numericals (Numerical From Textual Exercise)|42 Videos
  • WORK, ENERGY AND POWER

    KUMAR PRAKASHAN|Exercise SECTION - B Numericals (Numerical From .DARPAN. Based On Textbook)|15 Videos
  • WORK, ENERGY AND POWER

    KUMAR PRAKASHAN|Exercise SECTION - A Questions - Answers (Try Yourself (VSQs))|74 Videos
  • WAVES

    KUMAR PRAKASHAN|Exercise SECTION-F (Questions From Module) (Sample questions for preparation of competitive exams)|23 Videos

Similar Questions

Explore conceptually related problems

An elevator can carry a maximum load of 1800 kg (elevator + passengers) is moving up with a constant speed of 2ms^(-1) . The frictional force opposing the motion is 4000 N. Determine the minimum power delivered by the motor to the elevator in watts as well as in horse power.

An elevator can carry a maximum load of 1800 kg (elevator +passengers ) is moving up with a constant speed of 2ms^(-1) .The frictional force opposing the motion is 4000 N . Determine the minimum power delivered by the motor to the elevator in watss as well as in horse power .

Engine of a car of mass 1500kg, keeps car moving with constant velocity 5ms^(-1) . If frictional force is 1000 N, power of engine is …………..

A lift carries a maximum weight of 2400 N to a height of 10 m with a constant speed 2ms^(-1) . Find out the power and the work done.

A particle of mass 1 kg moves in a circular path of radius 1 m such that its speed varies with time as per equation v=3t^(2)m//s where time t is in seconds. The power delivered by the force acting on the paritcle at t=1s , is :-

Car A of mass 1000 kg moves on a horizontal straight road with speed 36kmh^(-1) . If the force resisting the motion is 100 N, then find the power of the engine. Now, after covering 200 m distance, car A collides with a stationary car B of same mass and becomes stationary. As a result car B start moving on the horizontal road, then what would be the speed of car B just after the collision? (The engine of car B is off.)

The maximum stress that can be applied to the material of a wire used to suspend an elevator is (3)/(pi)xx10^(8)N//m^(2) if the mass of elevator is 900 kg and it move up with an acceleration 2.2m//s^(2) than calculate the minimum radius of the wire.

KUMAR PRAKASHAN-WORK, ENERGY AND POWER -SECTION - B Numericals (Numerical From Textual Illustration)
  1. Examine Tables 61. -6.3 and express (a) the energy required to break o...

    Text Solution

    |

  2. An elevator can carry a maximum load of 1800 kg (elevator +passengers ...

    Text Solution

    |

  3. In a nuclear reactor a neutron of high speed (typically 10^(7) ms^(-1)...

    Text Solution

    |

  4. Consider the collision depicted in figure to be between two billiard b...

    Text Solution

    |

  5. Find the angle between vec(P) = - 2hat(i) +3 hat(j) +hat(k) and vec(Q...

    Text Solution

    |

  6. If the angle between vec(A) = 2hat(i)+4hat(j)+2hat(k) and vec(B) =2hat...

    Text Solution

    |

  7. It is well known that a raindrop falls under the influence of the down...

    Text Solution

    |

  8. A cyclist comes to a skidding stop in 10 m . During this process , the...

    Text Solution

    |

  9. In a ballistics demonstration a police officer fires a bullet of mass ...

    Text Solution

    |

  10. A woman pushes a trunk on a railway platform which has a rough surface...

    Text Solution

    |

  11. A block of mass m = 1 kg , moving on a horizontal surface with speed v...

    Text Solution

    |

  12. To stimulate car accident , auto manufacturers study the collision of ...

    Text Solution

    |

  13. As shown in fig. a block of mass m = 0.40 kg is moving on a frictionle...

    Text Solution

    |

  14. A spring of spring constant 500 N/m is attached on a rough surface at...

    Text Solution

    |

  15. Express incident average solar energy of 5xx10^(24) J on earth in eV ...

    Text Solution

    |

  16. Work done by one heartbeat of human is 0.5 J , then express it in eV .

    Text Solution

    |

  17. Energy released by th explosion of supernova is 10^(44) J , then expre...

    Text Solution

    |

  18. The elevator can carry a maximum load of 2800 kg (elevator +passengers...

    Text Solution

    |

  19. A railway coach of mass 8000 kg moving with speed of 54 ms^(-1) colli...

    Text Solution

    |

  20. Consider the collision depicted in gif . To be between two billiard ba...

    Text Solution

    |