Home
Class 11
PHYSICS
In a children\'s park, there is a slide ...

In a children\'s park, there is a slide which has a total length of 10 m and a height of 8.0 m figure. Vertical ladder are provided to reach the top. A boy weighting 200 N climbs up the ladder to the top of the slide and slides down to the ground. The averages friction offered by the slide is three tenth of his weight. Find a. the work done by the ladder on the boy as he goes up. b. the work done by the slide on the boy as he comes down. Neglect any work done by forces inside the body of the boy.

A

The work done by ladder on the boy as he goes up is zero

B

The work done by ladder on boy as he goes up is `- 1600 J`

C

The work done by slide on boy as he comes down is. 600 J'

D

The work done by slide on boy as he comes down is 1600 J

Text Solution

Verified by Experts

The correct Answer is:
A, C
Promotional Banner

Topper's Solved these Questions

  • WORK AND ENERGY

    ANURAG MISHRA|Exercise Level 3|34 Videos

  • WORK AND ENERGY

    ANURAG MISHRA|Exercise Matching types problems|14 Videos

  • WORK AND ENERGY

    ANURAG MISHRA|Exercise Level 1|53 Videos

  • UNIT AND DIMENSIONS

    ANURAG MISHRA|Exercise Matching Type Problem|4 Videos

Similar Questions

Explore conceptually related problems

In a children's park, there si a slide which has a total length of 10 and a height of 8.0 m figure. Vertical ladder are provided to reach the top. A boy weighting 200 N climbs up the ladder to the top of the slide and slides down to the ground. The averages friction offered by the slide is three tenth of his weight. Find a. the work done by the ladder on the boy as he goes up. b. the work done by the slide on the boy as he comes down. Neglect any work done by forces inside the body of the boy.

A girl weighing 400 N climbs a vertical ladder. If the value of g be 10 m s^(-2) , the work done by her after climbing 2 m will be :

A ladder 25 m log just reaches the top of a building 24 m high from the ground. What is the distance of the foot of the ladder from the building ?

A ladder 10 m long reaches a window 8 m above the ground. Find the distance of the foot of the ladder from the base of the wall.

A ladder is resting against a wall and a person climbs up the ladder.Is the ladder more likely to slip out at the bottom as the person climbs closer to the top of the ladder? Explain.

A ladder 10 m log reaches the window of a house 8 m above the ground. Find the distance of the foot of the ladder from the base of the wall.

A body of mass 0.5 kg is taken up an inclined plane of length 10 m and height 5 m and then allowed to slide down to the bottom again. The coefficient of friction between the body and the plane is 0.1. The work done by the frictional force over the round trip is

A skier starts from the top of a hill with speed 5m//s and slides down the hill of vertical height 60 m as shown. Neglect friction. Find his speed at the bottom.

A ladder is resting with one end is contact with the top of a wall of height 60 m and the other end on the ground is at a distance of 11 m form the wall. The length of the ladder is :

ANURAG MISHRA-WORK AND ENERGY-Level 2
  1. The potential energy U in joule of a particle of mass 1 kg moving in x...

    Text Solution

    |

  2. A simple pendulum consisting of a mass M attached to a string of lengt...

    Text Solution

    |

  3. An object is displaced from a point A(0, 0, 0) to B(1m, 1m , 1m) under...

    Text Solution

    |

  4. A particle mass is tied to an ideal string and whirled in a vertical c...

    Text Solution

    |

  5. The following plot shows the variation of potential energy (U) of a sy...

    Text Solution

    |

  6. A smooth narrow tube in the form of an arc AB of a circle of centre O ...

    Text Solution

    |

  7. In a children\'s park, there is a slide which has a total length of 10...

    Text Solution

    |

  8. A particle of mass m is kept at the top of a smooth fixed sphere. It i...

    Text Solution

    |

  9. The total work done on a particle is equal to the change in its kineti...

    Text Solution

    |

  10. A particle is acted upon by a force of constant magnitude which is alw...

    Text Solution

    |

  11. You lift a suitcase from the floor and keep it on a table. The work do...

    Text Solution

    |

  12. A particle of maas m is attched to a light string of length l, the oth...

    Text Solution

    |

  13. The string of a simple pendulum can with stand a maximum tension equal...

    Text Solution

    |

  14. A particle of mass m is at rest in a train moving with constant veloci...

    Text Solution

    |

  15. The potential energy in joules of a particle of mass 1 kg moving in a ...

    Text Solution

    |

  16. A ball is projected vertically upwards. Air resistance and variation i...

    Text Solution

    |

  17. A ball is projected vertically upwards. Air resistance and variation i...

    Text Solution

    |

  18. A ball is projected vertically upwards. Air resistance and variation i...

    Text Solution

    |