Home
Class 12
PHYSICS
A particle moves in a circular orbit und...

A particle moves in a circular orbit under the action of a central attractive force inversely proportional to the distance `r`. The speed of the particle is

A

Proportional to `r^(2)`

B

Independent of r

C

Proportional to r

D

Proportional to `1//r`

Text Solution

Verified by Experts

The correct Answer is:
B
`F = K (1)/(r)implies(k)/(r) =("mv"^(2))/(r) implies v = sqrt(k/m)`
So mdependent of r
Promotional Banner

Topper's Solved these Questions

  • MOTION IN A PLANE

    PHYSICS WALLAH|Exercise NEET Past 5 years Questions|10 Videos

  • MOTION IN A PLANE

    PHYSICS WALLAH|Exercise NEET Past 5 years Questions|10 Videos

  • MECHANICAL PROPERTIES OF MATTER

    PHYSICS WALLAH|Exercise NEET Past 5 Yeats Questions|16 Videos

  • MOTION IN A STRAIGHT LINE

    PHYSICS WALLAH|Exercise NEET Past 5 Years Questions|5 Videos

Similar Questions

Explore conceptually related problems

A particle moves in a circular orbit under the action of a central attractive force which is inversely proportional to the distance 'r' . The speed of the particle is

A particle executes circular motion under a central attractive force inversely proportional to distance R. The speed of the particle is

A particle is moving with a uniform speed in a circular orbit of radius R in a central force inversely proportional to the n^(th) power of R. If the period of rotation of the particle is T, then :

A particle is moving with uniform speed along the circumference of a circle of radius R under the action of a central fictitious force F which is inversely proportional to R^3 . its time period of revolution will be given by :

Four particles each of mass M, move along a circle of radius R under the action of their mutual gravitational attraction as shown in figure. The speed of each particle is :

Two particles of equal mass (m) each move in a circle of radius (r) under the action of their mutual gravitational attraction find the speed of each particle.

PHYSICS WALLAH-MOTION IN A PLANE -LEVEL-2
  1. Show that the motion of one projectile as seen from another projectile...

    Text Solution

    |

  2. The speed of boat is 5 kmh^(-1) in still water. It crosses a river of ...

    Text Solution

    |

  3. A boat P is moving at 40 "km"//"hr" and another boat Q is moving at 20...

    Text Solution

    |

  4. A boat man could row his boat with a speed 10 m/sec. He wants to take ...

    Text Solution

    |

  5. If a(r) and a(t) represent radial and tangential accelerations, the mo...

    Text Solution

    |

  6. Shown in the figure are the velocity time graphs of the two particles ...

    Text Solution

    |

  7. When a body is thrown up in a lift with a velocity u relative to the l...

    Text Solution

    |

  8. In a projectile motion, where is the angular momentum is minimum ?

    Text Solution

    |

  9. A man walks in rain with a velocity of 5 kph. The rain drops strike at...

    Text Solution

    |

  10. Two racing cars of masses m(1) and m(2) are moving in circles of radii...

    Text Solution

    |

  11. A wheel is at rest. Its angular velocity increases uniformly and becom...

    Text Solution

    |

  12. Two particles P and Q are located at distance r(p) and r(Q) respective...

    Text Solution

    |

  13. A stone of mass 0.5 kg tied with a string of length 1 metre is moving ...

    Text Solution

    |

  14. A stone tied to the end of a 20 cm long string is whriled in a horizon...

    Text Solution

    |

  15. A particle moves in a circular orbit under the action of a central att...

    Text Solution

    |

  16. To keep a particle moving with constant velocity on a frictionless sur...

    Text Solution

    |

  17. A car moves at a constant speed on a road as shown in figure. The norm...

    Text Solution

    |

  18. The magnitude of the centripetal force acting on a body of mass m exec...

    Text Solution

    |

  19. Radius of the curved road on national highway is r. Width of the road ...

    Text Solution

    |

  20. A cricket ball is hit 30^(@) with the horizontal with kinetic energy K...

    Text Solution

    |