Home
Class 11
PHYSICS
A body is projected with kinetic energy ...

A body is projected with kinetic energy k at angle `phi` with the vertical. Neglecting friction, its potential energy at the highest point will be

A

`k cos^(2) phi`

B

`k sin^(2) phi`

C

`k`

D

zero

Text Solution

Verified by Experts

The correct Answer is:
A
KE+PE=K
`P.E=K-1/2m u^(2) sin^(2)phi`
`=K-Ksin^(2) theta`
`=Kcos^(2)phi`
Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

A projectile is projected with a kinetic energy K . If it has the maximum possible horizontal range, then its kinetic energy at the highest point will be

A particle is projected from the ground with a kinetic energy E at an angle of 60° with the horizontal. Its kinetic energy at the highest point of its motion will be

A body is projected horizontally with a velocity of u ms^(-1) at an angle theta with the horizontal. The kinetic energy at the highest point is (3)/(4)th of the kinetic energy. The value of theta is :

A projectile is fired with kinetic energy 1 kj. If its range is maximum, what will be its kinetic energy at the highest point of its trajectory ?

The kinetic energy of a projectile at the highest point is-

Choose the correct option (i) The speed of a projectile at its maximum height is half of its initial speed. The angle of projection is 60^(@) . (ii) A missile is fired for maximum range with an initial velocity of 20 m//s , the range of the missile is 40 m . (iii) A ball is projected with a kinetic energy E at an angle of 45^(@) to the horizontal. At the highest point during its flight, its kinetic energy will be E//2 . (iv) An object is projected at an angle of 45^(@) with horizontal. The horizontal range and the maximum height will be in the ratio 4:1

A body projected at an angle theta to the horizontal with kinetic energy E_k . The potential energy at the highest point of the trajectory is

RESONANCE-WORK POWER AND ENERGY-Exercise
  1. In the figure shown initial spring is in unstretched state and blocks ...

    Text Solution

    |

  2. A block attached to a spring, pulled by a constant horizontal force, i...

    Text Solution

    |

  3. A body is projected with kinetic energy k at angle phi with the vertic...

    Text Solution

    |

  4. A man places a chain (of mass m and length l) on a table slowly. Initi...

    Text Solution

    |

  5. Power supplied to a mass 2 kg varies with time as P = (3t^(2))/(2) wat...

    Text Solution

    |

  6. A constant power P is applied to a particle of mass m. The distance tr...

    Text Solution

    |

  7. A rigid body is acted upon by a horizontal force which is inversely pr...

    Text Solution

    |

  8. The graph between the resistive force F acting on a body and the dista...

    Text Solution

    |

  9. A particle move in a straight line with retardation proportional to it...

    Text Solution

    |

  10. A body is falling under gravity . When it loses a gravitational potent...

    Text Solution

    |

  11. A block of mass m is attached to two unstretched springs of spring con...

    Text Solution

    |

  12. A body of mass m dropped from a certain height strikes a light vertica...

    Text Solution

    |

  13. A particle moves with a velocity v=(5hati-3hatj + 6hatk) ms^(-1) under...

    Text Solution

    |

  14. An electric motor creates a tension of 4500 newton in a hoisting cable...

    Text Solution

    |

  15. The potential energy of a partical veries with distance x as shown in ...

    Text Solution

    |

  16. The potential energy of a force filed vec(F) is given by U(x,y)=sin(x+...

    Text Solution

    |

  17. A spring of force constant 800N//m has an extension of 5cm. The work d...

    Text Solution

    |

  18. A body is moved along a straight line by a machine delivering constant...

    Text Solution

    |

  19. The total work done on a particle is equal to the change in its mechan...

    Text Solution

    |

  20. A ring of mass m can slide over a smooth vertical rod. The ring is con...

    Text Solution

    |