Home
Class 11
PHYSICS
A plank of mass M is placed over smooth ...

A plank of mass `M` is placed over smooth inclined plane and sphere is also placed over the plank. Friction is sufficient between sphere and plank. If plank and sphere are released from rest, the frictional force on sphere is -
.

A

up the plane

B

down the plane

C

zero

D

maybe up or down the plane

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • ROTATIONAL MOTION

    DC PANDEY|Exercise More than one option is correct|36 Videos

  • ROTATIONAL MOTION

    DC PANDEY|Exercise Comprehension Type Questions|41 Videos

  • ROTATIONAL MOTION

    DC PANDEY|Exercise Integer Type Questions|17 Videos

  • ROTATIONAL MECHANICS

    DC PANDEY|Exercise Subjective Questions|2 Videos

  • SEMICONDUCTORS AND ELECTRONIC DEVICES

    DC PANDEY|Exercise More than One Option is Correct|3 Videos

Similar Questions

Explore conceptually related problems

A solid sphere of mass m and radius R is placed over a plank of same mass m . There is sufficient friction between sphere and plank to prevent slipping. Angular acceleration of sphere is

A solid sphere of mass m and radius R is placed over a plank of same mass m . There is sufficient friction between sphere and plank to prevent slipping. Force of friction between sphere and plank is

A solid sphere of mass m and radius R is placed over a plank of same mass m . There is sufficient friction between sphere and plank to prevent slipping. Acceleration of centre of mass of sphere is

A plank of mass 3m is placed on a rough inclined plane and a man of mass m, the coefficient of friction between the board and inclined plane is mu = 0.5 , the minimum acceleration of man so that plank does not slide is :

Find the acceleration of a system consisting of a cylinder of mass m and radius R and a plank of mass M placed an a smooth surface if it is pulled with a force F as shown Fig. Given that sufficient friction is present between the cylinder and the plank surface to prevent sliding of the cylinder.

A solid sphere of mass M and radius R is pulled by a force F as shown in figure . If the sphere does not slip over the surface , then frictional force acting on the sphere is

A solid sphere of mass m and radius R is placed over a plank of same mass m . There is sufficient friction between sphere and plank to prevent slipping. When a horizontal force F is applied at centre of sphere, acceleration of the plank is

A plank of mass M rests on a smooth horizontal plane. A sphere of mass m and radius r is placed on the rough upper surface of the plank and the plank is suddenly given a velocity v in the direction of its length. Find the time after which the sphere begins pure rolling, if the coefficient of friction between the plank and the sphere is mu and the plank is sufficiently long.

A long horizontal plank of mass m is lying on a smooth horizontal surface. A sphere of same mass m and radius r is spinned about its own axis with angular velocity we and gently placed on the plank. The coefficient of friction between the plank and the sphere is mu . After some time the pure rolling of the sphere on the plank will start. Answer the following questions. Find the displacement of the plank till the sphere starts pure rolling.

DC PANDEY-ROTATIONAL MOTION-A Only One Option is Correct
  1. A particle is projected with velocity v at an angle theta aith horizon...

    Text Solution

    |

  2. An impulse J is applied on a ring of mass m along a line passing throu...

    Text Solution

    |

  3. A plank of mass M is placed over smooth inclined plane and sphere is a...

    Text Solution

    |

  4. In the figure shown, the plank is being pulled to the right with a con...

    Text Solution

    |

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

    Text Solution

    |

  6. A time varying force F=2t is applied on a spool as shown in figure. Th...

    Text Solution

    |

  7. A right triangular plate ABC of mass m is free to rotate in the vertic...

    Text Solution

    |

  8. A uniform circular disc of radius r is placed on a rough horizontal su...

    Text Solution

    |

  9. The radius of gyration of a solid hemisphere of mass M and radius Rn a...

    Text Solution

    |

  10. Two particles A and B are moving with constant velocities V(1)=hatj an...

    Text Solution

    |

  11. A uniform disc of radius R lies in the x-y plane, with its centre at o...

    Text Solution

    |

  12. A uniform rod of mass m and lkength 2a lies at rest on rotating with a...

    Text Solution

    |

  13. A solid sphere of mass 5 kg and and radius 1 m after rotating with ang...

    Text Solution

    |

  14. A ring of mass m is rolling without slipping with linear velocity v as...

    Text Solution

    |

  15. A cube of mass m and side a is moving along a plane with constant spee...

    Text Solution

    |

  16. In the pully system shown, if radii of the bigger and smaller pulley a...

    Text Solution

    |

  17. A uniform rod is hinged at its one end and is allowed to rotate in ver...

    Text Solution

    |

  18. Uniform rod Ab is hinged at the end A in the figure. The other end of ...

    Text Solution

    |

  19. A uniform rod of mass m, length l is placed over a smooth horizontal s...

    Text Solution

    |

  20. A uniform rectangular plate of mass m which is free to rotate about th...

    Text Solution

    |