Home
Class 12
PHYSICS
Sand drops fall vertically at the rate o...

Sand drops fall vertically at the rate of 2 kg/sec on to a conveyor belt moving horizontal with a velocity 0.2 m/s. Then the extra force required to keep the belt moving is

A

`0.4 N`

B

`0.08 N`

C

`0.04N`

D

`0.2 N`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • WAVES

    MBD PUBLICATION|Exercise QUESTION BANK|295 Videos

Similar Questions

Explore conceptually related problems

Bulltes of 0.03 kg mass each hit a plate at the rate of 200 bullets per second, with a velocity of 50 m/s and reflect back with a velocity of 30 m/s. The average force acting on one plate (in Newton) is

Calculate the wavelength of a body of mass 2 mg moving with a velocity of 10 m sec(-1)

Calculate the kinetic energy of a body of mass m moving in a circular path of radius 0.5m when the centripetal force is 1/r^2 .

Calculate the kinetic energy of a body of mass 1kg moving in a circular path of radius 0.5m when the centripetal force is 1/r^3 .

A machine gun has a mass 5 kg. It fires 50 gm bullets at the rate of 30 bullets per minute at a speed of 400 m/s. What force is required to keep the gun in position.

Calculate de Broglie wavelength of an electron (m = 9.1 xx 10^-31kg) moving with a velocity of 10^5 m//s .

A machine gun of mass 15 kg fires 30g bullets at the rate of 5 bullets per second with a velocity of 500 m/s. What force in newton's must be applied to the gun to hold in position ?

A rocket burns 0.2 kg of fuel per second and ejects it as a gas with velocity of 10 km/s. Calculate the force exerted by the ejected gas on the rocket.

Find the velocity and acceleration at the end of 2 seconds of the particle moving according to the following rules. s = 3/2t + 1

MBD PUBLICATION-WORK, ENERGY AND POWER-QUESTION BANK
  1. The kinetic energy of a body is increased by 300 % .The momentum of th...

    Text Solution

    |

  2. Two bodies of mass 1 kg and 2 kg have equal momentum. The ratio of the...

    Text Solution

    |

  3. Sand drops fall vertically at the rate of 2 kg/sec on to a conveyor be...

    Text Solution

    |

  4. A bullet when fired at a target has its velocity decreased to 50% afte...

    Text Solution

    |

  5. A body starts from rest and acquires a velocity V in time T. The work ...

    Text Solution

    |

  6. An athlete of mass 60 kg skips at the rate of 20 steps per minute thro...

    Text Solution

    |

  7. A rifle bullet loses 1/20th of its velocity in passing through a plank...

    Text Solution

    |

  8. The power engine which accelerates a car of mass 800 kg to a speed of ...

    Text Solution

    |

  9. A tank of 2xx2xx3 is to be filled with water from a well of average de...

    Text Solution

    |

  10. If the momentum of certain body be increased by 50%, it's K.E. will in...

    Text Solution

    |

  11. A ball is dropped from a height of 20 cm. The ball rebounds to a heigh...

    Text Solution

    |

  12. Two bodies with kinetic energies in the ratio of 4:1 are moving with e...

    Text Solution

    |

  13. A car drives along a straight level frictionless roaid by an engine de...

    Text Solution

    |

  14. A box of mass 25 kg starts from rest and slides down an inclined plane...

    Text Solution

    |

  15. A stone is projected vertically up to reach maximum height h. The rati...

    Text Solution

    |

  16. How many 2.5 kg bricks can a man carry up a staircase 3.6m high in one...

    Text Solution

    |

  17. A vehicle of mass m is moving on a rough horizontal road with momentum...

    Text Solution

    |

  18. A bullet weighing 50 gm leaves the gun with a velocity of 30 m/s.If th...

    Text Solution

    |

  19. A bomb of mass 9 kg explodes into two pieces of mass 3 kg and 6 kg. Th...

    Text Solution

    |

  20. A body of mass 1 kg initially at rest explodes and breaks into three s...

    Text Solution

    |