Home
Class 9
PHYSICS
An object of mass 40 kg is raised to a h...

An object of mass 40 kg is raised to a height of 5 m above the ground. What is its potential energy ? If the object is allowed to fall, find its kinetic energy when it is half - way down.

Text Solution

AI Generated Solution

To solve the problem step by step, we will first calculate the potential energy of the object when it is raised to a height of 5 meters, and then we will find the kinetic energy when it is halfway down. ### Step 1: Calculate the Potential Energy (PE) The formula for potential energy is given by: \[ PE = m \cdot g \cdot h ...
Promotional Banner

Topper's Solved these Questions

  • WORK AND ENERGY

    PRADEEP|Exercise Short Answer Questions|11 Videos
  • WORK AND ENERGY

    PRADEEP|Exercise Long Answer Questions|8 Videos
  • WORK AND ENERGY

    PRADEEP|Exercise III Quiz Testing|10 Videos
  • SOUND

    PRADEEP|Exercise Model Test (sec - B)|12 Videos

Similar Questions

Explore conceptually related problems

An object of mass 8 kg is placed at a height of 5 m above the ground. What kind of energy does this object possess?

An object of mass 8 kg is placed at a height of 5 m above the ground. Find the amount of energy possessed by the object. (Take g=9.8 m/ s^2 )

A body of mass 4kg, is taken from a height of 5 m to a hegiht 10m. Find increase in potential energy.

A mass of 20 kg is at a height of 8 m above the ground. Then the potential energy possessed by the body is: [Given g = 9.8 ms^(-2) ]

An object of mass 12 kg is at a certain height above the ground. If the potential energy of the object is 480 J, find the height at which the object is with respect to the ground. Given. g=10 ms^(-2) .

A bomb of mass 40 kg is dropped from an aeroplane at a height of 1 km above the ground. What is its kinetic energy (i) at the end of 10 s and (ii) on reaching the ground ?

An object of mass 1kg is raised through a height h. Its potentil energy increases by 1J. Find the height h.

An object of mass 12 kg is at a certain height above the gorund if the potential energy of the object is 480J find the height at which the object is withj respect to the ground Given, g = 10m//s^2

PRADEEP-WORK AND ENERGY-NCERT Questions
  1. An object thrown at a certain angle to the ground moves in a curved pa...

    Text Solution

    |

  2. A battery lights a bulb. Describe the energy changes involved in the p...

    Text Solution

    |

  3. Certain force acting on a 20 kg mass changes its velocity from 5m//s t...

    Text Solution

    |

  4. A mass of 10 kg is at a point A on a table. It is moved to a point B. ...

    Text Solution

    |

  5. The potential energy of a freely falling object decreases progressivel...

    Text Solution

    |

  6. What are the verious energy transformations that occur when you are ri...

    Text Solution

    |

  7. Does the transfer of energy take palce when you push a huge rock with ...

    Text Solution

    |

  8. A certain household has consumed 250 units of energy during a month. H...

    Text Solution

    |

  9. An object of mass 40 kg is raised to a height of 5 m above the ground....

    Text Solution

    |

  10. What is the work done by the force of gravity on a satellite moving ro...

    Text Solution

    |

  11. Can there be displacement of an object in the absence of any force act...

    Text Solution

    |

  12. A person holds a bundle of hay over his head for 30 minutes and gets t...

    Text Solution

    |

  13. An electric heater is rated 1500W. How much energy does it use in 10 ...

    Text Solution

    |

  14. Illustrate the law of conservation of energy by discussing the energy ...

    Text Solution

    |

  15. An object of mass m is moving with a constant velocity upsilon How muc...

    Text Solution

    |

  16. Calculate the work required to be done to stop a car of 1500 kg moving...

    Text Solution

    |

  17. In each of the following, a force, F is acting on an object of mass, m...

    Text Solution

    |

  18. Soni says that the acceleration in an object could be zero even when s...

    Text Solution

    |

  19. find the energy in kWh consumed in 10 hours by four devices of power 5...

    Text Solution

    |

  20. A freely falling object eventually stops on reaching the ground. What ...

    Text Solution

    |