Home
Class 12
PHYSICS
A child is swinging a swing. Minimum and...

A child is swinging a swing. Minimum and maximum heights fo swing from the earth's surface are 0.75 m and 2 m respectively. The maximum velocity of this swing is

A

10 m/s

B

5 m/s

C

8 m/s

D

15 m/s

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • WORK, ENERGY AND POWER

    AAKASH INSTITUTE ENGLISH|Exercise Assignment (SECTION - D)|13 Videos
  • WORK, ENERGY AND POWER

    AAKASH INSTITUTE ENGLISH|Exercise Assignment (SECTION - B)|35 Videos
  • WAVES

    AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT ( SECTION-D ( Assertion - Reason Type Questions ))|12 Videos

Similar Questions

Explore conceptually related problems

The minimum and maximum distances of a satellite from the centre of the earth are 2R and 4R respectively where R is the radius of earth and M is the mass of the earth find radius of curvature at the point of minimum distance.

The minimum and maximum velocities of a projectile are 10 ms^(-1) and 20 ms^(-1) respectively. The horizontal range and maximum height are respectively (g=10 ms^(-2) )

The minimum and maximum distances of a satellite from the center of the earth are 2R and 4R respectively, where R is the radius of earth and M is the mass of the earth . Find (a) its minimum and maximum speeds, (b) radius of curvature at the point of minimum distance.

A rocket is launched upward from the earth surface whose velocity time graph shown in figure. Then maximum height attained by the rocket is :

Maximum height reached by a rocket fired with a speed equal to 50% of the escape velocity from earth's surface is:

A particle is throws vertically upwards from the surface of earth and it reaches to a maximum height equal to the radius of earth. The radio of the velocity of projection to the escape velocity on the surface of earth is

A mass m is taken to a height R from the surface of the earth and then is given a vertical velocity upsilon . Find the minimum value of upsilon , so that mass never returns to the surface of the earth. (Radius of earth is R and mass of the earth m ).

Find work done in shifting a body of mass m from a height h above the earth's surface to a height 2h above the earth's surface..

The minimum projection velocity of a body from the earth's surface so that it becomes the satellite of the earth (R_(e)=6.4xx10^(6) m) .

A simple pendulum with bob of mass m and conducting wire of length L swings under gravity through an angle 2 theta . The earth's magnetic field component in the direction perpendicular to swing is B . Maximum potential difference induced across the pendulum is

AAKASH INSTITUTE ENGLISH-WORK, ENERGY AND POWER-Assignment (SECTION - C)
  1. A simple pendulum with a bob of mass m oscillates from A to C and back...

    Text Solution

    |

  2. A car moving with a speed of 40 km//h can be stopped after 2m by apply...

    Text Solution

    |

  3. A child is swinging a swing. Minimum and maximum heights fo swing from...

    Text Solution

    |

  4. A long spring is stretched by 2 cm, its potential energy is U. IF the ...

    Text Solution

    |

  5. A ball of mass 2 kg and another of mass 4 kg are dropped together from...

    Text Solution

    |

  6. A mass of 0.5 kg moving with a speed of 1.5 m//s on a horizontal smoot...

    Text Solution

    |

  7. One coolie takes 1min to raise a box through a height of 2m. Another o...

    Text Solution

    |

  8. In a force of 9 N is acting on a body, then find instataneous power su...

    Text Solution

    |

  9. A mass is performing vertical ciruclar motion . If the average velocit...

    Text Solution

    |

  10. A simple pendilum with bob of mass m and length l is held in position ...

    Text Solution

    |

  11. A stone tied to a string of length L is whirled in a vertical circle w...

    Text Solution

    |

  12. The potential energy between two atoms in a molecule is given by U(x)=...

    Text Solution

    |

  13. The cofficient of restitution e for a perfectly elastic collision is ...

    Text Solution

    |

  14. A moving particle of mass m makes a head-on perfectly inelastic collis...

    Text Solution

    |

  15. Two identical ball A and B having velocities of 0.5m/s and -0.3m/s res...

    Text Solution

    |

  16. A body of mass m moving with velocity 3km//h collides with a body of m...

    Text Solution

    |

  17. A rubber ball is dropped from a height of 5 m on a planet where the ac...

    Text Solution

    |

  18. A ball moving with velocity 2 ms^(-1) collides head on with another st...

    Text Solution

    |

  19. A metal ball of mass 2 kg moving with a velocity of 36km//h has a head...

    Text Solution

    |

  20. Two springs A and B(kA=2kB) are stretched by applying forces of equal ...

    Text Solution

    |