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

An elevator can carry a maximum load of `1800 kg` (elevator + passengers) is moving up with a constant speed of `2 ms^(-1)`. The friction force opposite the motion is `4000 N`.What is minimum power delivered by the motor to the elevator?

Text Solution

AI Generated Solution

To solve the problem of finding the minimum power delivered by the motor to the elevator, we can follow these steps: ### Step 1: Identify the given values - Maximum load of the elevator (mass, m) = 1800 kg - Constant speed of the elevator (v) = 2 m/s - Friction force (f_friction) = 4000 N - Acceleration due to gravity (g) = 10 m/s² (approximately) ...
Promotional Banner

Topper's Solved these Questions

  • WORK, ENERGY AND POWER

    NCERT ENGLISH|Exercise EXERCISE|30 Videos
  • WAVES

    NCERT ENGLISH|Exercise EXERCISE|27 Videos

Similar Questions

Explore conceptually related problems

An elevator that can carry a maximum load of 1500 kg (elvator+ passengers) is moving up with a constant speed of 2 ms^(-1). The frictional force opposing the motion is 3000 N. Find the minmum power delvered by the motor to the elevator in watts as well as in horse power (g=10ms^(-2))

Sand drops from a stationary hopper at the rate of 5kg//s on to a conveyor belt moving with a constant speed of 2m//s . What is the force required to keep the belt moving and what is the power delivered by the motor, moving the belt?

An ox can a maximum force of 1000 N.It is taking part in a cart race and is able to pull the cart at a constant speed of 30 ms^(-1) while making its best effort.Calculate the power developed by the ox.

A body of mass 10 kg moves with a constant speed v of 2 ms^(-1) along a circular path of radius 8 m. The power produced by the body will be

A lorry of mass 2000 kg is traveling up a hill of certain height at a constant speed of 10 m/s. The frictional resistance is 200 N, then the power expended by the coolie is : (g=10 m//s^(2))

A 60 kg man stands on an elevator floor The elevator is going up with constant acceleration of 1.96 m/ s^2 . Percentage change in the apparent weight of the person is

An object of mass 10kg moves at a constant speed of 10 ms^(-1) . A constant force, that acts for 4 sec on the object, gives it a speed of 2ms^(-1) in opposite direction. The force acting on the object is :

A constant retarding force of 50N is apllied to a body of mass 10kg moving initially with a speed of 10ms^(-1) . The body comes to rest after

An elevator weighing 500 kg is to be lifted up at a constant velociy of 0.20 m/s. What would be the minimum horsepower of the motor to be used?

A train is moving slowly on a straightly track with a constant speed of 2 ms^(-1) . A passenger in the train starts walking at a steady speed of 2 ms^(-1) to the back of the train in the opposite direction of the motion of the train . So, to an observer standing on the platform directly in the front of that passenger appears to be

NCERT ENGLISH-WORK, ENERGY AND POWER-EXERCISE
  1. An elevator can carry a maximum load of 1800 kg (elevator + passengers...

    Text Solution

    |

  2. The sign of work done by a force is important to understant. State car...

    Text Solution

    |

  3. A body of mass 2 kg initially at rest moves under the action of an app...

    Text Solution

    |

  4. Given in fig are examples of some potential energy functions in one di...

    Text Solution

    |

  5. The potential energy function for a particle executing simple harmonic...

    Text Solution

    |

  6. Answer the following: a) The casing of a rocket in flight burns up d...

    Text Solution

    |

  7. Underline the correct alterntaive: a) when a conservative force does...

    Text Solution

    |

  8. State if each of the following statements is true or false. Give reaso...

    Text Solution

    |

  9. Anwer carefully, with reasons: a) In an elastic collision of two bil...

    Text Solution

    |

  10. A body is initially at rest. It undergoes one-dimensional motion with ...

    Text Solution

    |

  11. A body is moving undirectionally under the influence of a source of co...

    Text Solution

    |

  12. A body constrained to move along the z-axis of a co-ordinate system, i...

    Text Solution

    |

  13. An electron and a proton are detected in a cosmic ray experiment, the ...

    Text Solution

    |

  14. A rain drop of radius 2mm, falls from a height of 500 m above the grou...

    Text Solution

    |

  15. A molecules in a gas container hits the wall with speed 200m//s at an ...

    Text Solution

    |

  16. A pump on the ground floor of a building can pump of water to fill a ...

    Text Solution

    |

  17. Two identical ball bearings in contact with each other and resting on ...

    Text Solution

    |

  18. The bob A of a simple pendulum released from 30^(@) to the vertical hi...

    Text Solution

    |

  19. The bob A of a simple pendulum is released from a horizontal position ...

    Text Solution

    |

  20. A trolley of mass 300 ks carrying a sand bag of 25 kg is moving unifor...

    Text Solution

    |

  21. A particle of mass 0.5kg travels in a straight line with velocity v=ax...

    Text Solution

    |