Home
Class 11
PHYSICS
A thief jumps from the upper storey of a...

A thief jumps from the upper storey of a house with a load on this back. What is the force of the load on his back, when thief is in air ?

Text Solution

Verified by Experts

Zero . This is because in free fall , g= a
` F = m ( g - a ) = m (g - g ) = Zero ` .
Promotional Banner

Topper's Solved these Questions

  • LAWS OF MOTION

    PRADEEP|Exercise Very short answer questions|73 Videos

  • LAWS OF MOTION

    PRADEEP|Exercise Long Answer Questions|16 Videos

  • LAWS OF MOTION

    PRADEEP|Exercise solved examples|104 Videos

  • KINEMATICS

    PRADEEP|Exercise 1 NCERT Comprehension|4 Videos

  • MATHEMATICAL TOOLS

    PRADEEP|Exercise Fill in the blanks|5 Videos

Similar Questions

Explore conceptually related problems

A thief jumps from the roof of a house with a box of weight W on his head. What will be the weight of the box as experienced by the thief during jump ?

A man weighing 100 kg carriesa load of 10kg on his head. He jumps from a tower with the load on his head. What will be the weight of the load as experienced by the man?

A police targets a thief, who is at rest at point Q. He fires a bullet from a point P which is at a distance of 990 m from Q and it reaches the point Q in 3 s. When the bullet is fired at P it produced a sound, which was heard by the theif. What is the difference in time taken by the sound and the bullet to reach point Q. Will the thief be able to escape from the bullet fired by police ? Take the velocity of sound in air as 330 ms^(-1) .

What will be the change in time period of a loaded spring, when taken to moon ?

PRADEEP-LAWS OF MOTION-conceptual problmes
  1. The motion of a particle of mass m is described by y =ut + (1)/(2) g t...

    Text Solution

    |

  2. Aeroplanes having wings fly at low altitudes while jet planes fly at h...

    Text Solution

    |

  3. A thief jumps from the upper storey of a house with a load on this bac...

    Text Solution

    |

  4. According to Newton' s third law, every force is a accompanied by an e...

    Text Solution

    |

  5. A meteorite burns in the atmosphere before it reaches the earth' s sur...

    Text Solution

    |

  6. On the pan of a spring balance , is placed a beaker containing water ....

    Text Solution

    |

  7. A person of mass m is hanging from a rope fastened to a stationary bal...

    Text Solution

    |

  8. Vehicles stop on applying brakes . Does this phenomenon violate the pr...

    Text Solution

    |

  9. Three identical blocks, each having a mass M, are pushed by a force F ...

    Text Solution

    |

  10. A bullet fired from a gun is more dangerous than an air molecule hitti...

    Text Solution

    |

  11. A rocket can move in air free space, but a jet plane cannot. Why?

    Text Solution

    |

  12. Why is it difficult to move a bike with its brakes on ?

    Text Solution

    |

  13. Send is spread on tracks covered with snow. Why ?

    Text Solution

    |

  14. When a weel is rolling on a level , what is the directionv of fricctio...

    Text Solution

    |

  15. Is large brake on a bicycle wheel more effective than a small one ? Ex...

    Text Solution

    |

  16. How do we save petrol when the types of the motor cycle are fully infl...

    Text Solution

    |

  17. A block of mass 1 kg lies on a horizontal surface in a truck. The coef...

    Text Solution

    |

  18. A block is gently placed at the top of an inclined plane 6.4 m long . ...

    Text Solution

    |

  19. How does a lubricant help in reducing friction ?

    Text Solution

    |

  20. When a person walks on a rough surface, the frictional force exerted b...

    Text Solution

    |