Home
Class 12
PHYSICS
If friction between pulley and string is...

If friction between pulley and string is sufficient to allow pure rolling then acceleration of pulley ‘A’ will be –

A

`(2g)/(7)`

B

`(4g)/(5)`

C

`(4g)/(7)`

D

`(2g)/(3)`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • 10 ROTATIONAL

    MOTION|Exercise Exercise - 2 (Level - II)|25 Videos
  • 10 ROTATIONAL

    MOTION|Exercise Exercise - 3 (Level - I)|27 Videos
  • 10 ROTATIONAL

    MOTION|Exercise Exercise - 1|77 Videos
  • ALTERNATING CURRENT

    MOTION|Exercise EXERCISE - 4 (LEVEL - II)|14 Videos

Similar Questions

Explore conceptually related problems

The acceleration of light pulley is

Figure shows a composite pulley of that consist of two cylinders of ‘R’ '2 R' stacked coaxially. Moment of inertia of composite pulley is (MR^(2))/(4) .A light string is wound over pulley and another pulley 'A' of mass 'M' is hanged through the string as shown in figure If there were no friction between string and pulley ‘A’, then the acceleration of pulley ‘A’ will be -

A solid sphere, a ring and a disc all having same mass and radius are placed at the top of an incline and released. The friction coefficient between the objects and the incline are same but not sufficient to allow pure rolling. Least time will be taken in reaching the bottom by

A disc shaped pulley of mass 'm'=4 kg and radius R=0.5m can rotate freely about its center. A block of mass M=2kg hangs from the pulley through is massless string that is tightly wrapped around the pulley. When the system is released, there is no slipping between pulley and string. (a) Calculate the angular accelerating of the pulley (b) Calculate the tension in the string

In the arrangement shown in fig neglect the masses of pulleys and string and also friction Calculate acceleration of blocks A and B

Coefficient of friction between pulley and light string is mu_(1) . Calculate minimum coefficient of friction between block A and ground such that system can be in equibrium.

String Rod, Pulley Constraints

[" Pulley in the diagram is "],[" massless but there is friction "],[" between pulley and string,then "],[" the acceleration of system is "],[qquad (qquad m)/(mu)(" ( ")/(" н ")]

String is wrapped over a pulley and free end is fixed to the ceiling as shown in figure. Mass of the pulley is m and its radius is R. Assume that pulley is identical to dise. Calculate acceleration of pulley as it is allowed to fall by unwinding the string. Assume that string does not slip over the pulley.

In the shown mass pulley system, pulleys and string are massless. The one end of the string is pulled by the force F = mg. The acceleration of the block will be :

MOTION-10 ROTATIONAL-Exercise - 2 (Level -I)
  1. Figure shows a composite pulley of that consist of two cylinders of ‘R...

    Text Solution

    |

  2. Figure shows a composite pulley of that consist of two cylinders of ‘R...

    Text Solution

    |

  3. If friction between pulley and string is sufficient to allow pure roll...

    Text Solution

    |

  4. If a person sitting on a rotating stool with his hands outstretched, s...

    Text Solution

    |

  5. A thin circular ring of mass M and radius r is rotating about its axis...

    Text Solution

    |

  6. A constant torque acting on a uniform circular wheel changes its angul...

    Text Solution

    |

  7. A rod of length L is hinged from one end. It is brought to a horizonta...

    Text Solution

    |

  8. A small bead of mass m moving with velocity v gets threaded on a stati...

    Text Solution

    |

  9. A thin uniform straight rod of mass 2 kg and length 1 m is free to rot...

    Text Solution

    |

  10. A child with mass m is standing at the edge of a disc with moment of i...

    Text Solution

    |

  11. A uniform rod is fixed to a rotating turntable so that its lower end i...

    Text Solution

    |

  12. A uniform rod is fixed to a rotating turntable so that its lower end i...

    Text Solution

    |

  13. One ice sketer of mass m moves with speed 2v to the right, while ano...

    Text Solution

    |

  14. A uniform rod AB of length L and mass M is lying on a smooth table. A ...

    Text Solution

    |

  15. A uniform rod AB of mass m and length l is at rest on a smooth horizon...

    Text Solution

    |

  16. A uniform rod of mass M is hinged at its upper end. A particle of mass...

    Text Solution

    |

  17. Two particles of equal mass m at A and B are connected by a rigid ligh...

    Text Solution

    |

  18. A body of mass m is moving with a constant velocity along a line paral...

    Text Solution

    |

  19. A triangular block ABC of mass m and side 2a lies on a smooth horizont...

    Text Solution

    |

  20. A recording disc rotates steadily at n(1) rps on a table. When a small...

    Text Solution

    |