Home
Class 12
PHYSICS
A partical is projected up from a point ...

A partical is projected up from a point at an angle theta whith the horizontal displacement, the graph among the following which does not represent the variation of kinrtic energy KE of the particle is,

A

Graph (A)

B

Graph (B)

C

Graph (C)

D

Graph (D)

Text Solution

Verified by Experts

Power ,`P_0=("work done")/("time")=(mgy)/t`
`=mgx` ( :'y/t=flow rate)
Increased power,
`P_1=(mgy^')/t=mg(y^t/t)=mgx.n=n.mgx`
Ratio of power `P_1/P_0=(n.mgx)/(mgx)=n/t`
`:.P_1:P_0=n:1`
Promotional Banner

Topper's Solved these Questions

  • GRAVITATION

    SIA PUBLICATION|Exercise MCQs|35 Videos
  • LAWS OF MOTION

    SIA PUBLICATION|Exercise M.C.Q|41 Videos
SIA PUBLICATION-KINETIC THEORY -PROBLEM ( MCQs )
  1. An object takes n times as much time as to slide down a 45^(@) rough i...

    Text Solution

    |

  2. A body is projected vertically upwatds at time t=0 and is it seen at a...

    Text Solution

    |

  3. A partical is projected up from a point at an angle theta whith the ho...

    Text Solution

    |

  4. A motor of power P0 is used to deliver water at a certain ra...

    Text Solution

    |

  5. The component of vector vecA = ax hati +ay hatj + az hatk along the ...

    Text Solution

    |

  6. A ball thrown vertically i.lp to reach its maximum height in t second....

    Text Solution

    |

  7. If a body is projected with angle theta to the horizontal, then ·

    Text Solution

    |

  8. Velocity and acceleration vectors of charged particle moving perpendic...

    Text Solution

    |

  9. A bucket filled with water is tied to a rope of len"gt"h 0.5 m and is ...

    Text Solution

    |

  10. A man standing on a road has to hold his umbrella at 30^(@) with the v...

    Text Solution

    |

  11. A body is projected from the earth at an angle 30^(@) with the horizon...

    Text Solution

    |

  12. At a given instant of time the position vector a particle moving in a ...

    Text Solution

    |

  13. A body is projected vertically upwatds at time t=0 and is it seen at a...

    Text Solution

    |

  14. The equation of trajectory ofa projectile is y = 10x-5/9x^2 If we assu...

    Text Solution

    |

  15. At a given instant of time two particles are having the position vecto...

    Text Solution

    |

  16. The horizontal and vertical displacements x and y of a projectile at a...

    Text Solution

    |

  17. The equations of motion of a projectile are given by x = 36t inetre an...

    Text Solution

    |

  18. A body of mass M kg is on the .top point of a smooth hemisphere of rad...

    Text Solution

    |

  19. The horizontal and vertical displacements of a projectile at time t ar...

    Text Solution

    |

  20. An object is projected with a velocity of 20 ms^(-1) making an angle o...

    Text Solution

    |