Home
Class 12
PHYSICS
The pulley arrangements shown in figure ...

The pulley arrangements shown in figure are identical, the mass of the rope being negligible. In case I the mass m is lifted by attaching a mass `2m` to the other end of rope with a constant downward force `F =2mg`, where g is acceleration due to gravity The acceleration of mass m in case I is
.

A

Zero

B

More than that in case (b)

C

Less than that in case (b)

D

Equal to that in case (b)

Text Solution

Verified by Experts

The correct Answer is:
C
In case (b) entire tension =2mg, hence acceleration is more.
Promotional Banner

Topper's Solved these Questions

  • NEWTONS LAWS OF MOTION

    ALLEN |Exercise EXERCISE-III|28 Videos

  • NEWTONS LAWS OF MOTION

    ALLEN |Exercise EXERCISE-I|52 Videos

  • NEWTON'S LAWS OF MOTION & FRICTION

    ALLEN |Exercise EXERCISE (JA)|4 Videos

  • RACE

    ALLEN |Exercise Basic Maths (Wave Motion & Dopplers Effect) (Stationary waves & doppler effect, beats)|25 Videos

Similar Questions

Explore conceptually related problems

In the fig. given masses m and m' are tied with a tread passing over a pulley, m' is on a frictionless horizontal surface. If acceleration due to gravity is g, the acceleration of m' in this arrangement will be:-

Block A of mass m//2 is connected to one end of light rope which passes over a pulley as shown in fig. A man of mass m climbs the other end of rope with a relative acceleration of g//6 with respect to rope. Find the acceleration of block A and tension in the rope.

The condition for a uniform spherical mass m of radius r to be a black hole is ..... (G = gravitational constant and g = acceleration due to gravity)

As shown in figure a monkey of 20g mass is holding a light rope that passes over a frictionless pulley. A bunch of bananas of the same mass is tied to the other end of rope. Inorder to get access to the bunch the monkey starts climbing the rope. The distance between the monkey and the bananas is

Two masses of 10kg and 5kg are suspended from a rigid support as shown in figure. The system is pulled down with a force of 150N attached to the lower mass. The string attached to the support breaks and the system accelerates downwards In case the force continues to act. what is the acceleration of the system ? .

A body A mass m_(1) exerts a force on another body B of mass m_(2) . If the acceleration of B be a_(2) , then the acceleration (in magnitude) of A is

USS 150) Two masses of 5 kg and 10 kg are connected to a pulley as shown. What will be the acceleration of the system (g= acceleration due to gravity)

A rod of mass m and length l is hinged at one of its ends A as shown in figure. A force F is applied at a distance x from A . The acceleration of centre of mass varies with x as -

The masses of 10kig and 20kg respectively are connected by a massless spring as shown in figure. A force of 200N acts on the 20kg mass. At the instant shown, the 10kg mass has acceleration 12m//sec^(2) . What is the acceleration of 20kg mass?

ALLEN -NEWTONS LAWS OF MOTION-EXERCISE-II
  1. A frame will be inertial, if it moves with respect to another inertial...

    Text Solution

    |

  2. Two masses 10kg and 20 kg respectively are connected by a massless spr...

    Text Solution

    |

  3. The pulley arrangements shown in figure are identical, the mass of the...

    Text Solution

    |

  4. What is the mechanical advantage of single fixed pulley:-

    Text Solution

    |

  5. Three masses of 1 kg, 6 kg and 3 kg are connected to each other with t...

    Text Solution

    |

  6. A balloon of mass M is descending at a constant acceleration alpha. Wh...

    Text Solution

    |

  7. The surface are frictionless, the ratio of T(1) and T(2) is

    Text Solution

    |

  8. The elevator shown in fig. is descending with an acceleration of 2ms^(...

    Text Solution

    |

  9. Two blocks of masses 6 kg and 4 kg are connected with rope of mass 2 k...

    Text Solution

    |

  10. A block of mass 2 kg is placed on the floor . The coefficient of stati...

    Text Solution

    |

  11. What force F must be applied so that m(1) and m(2) are at rest on m(3)...

    Text Solution

    |

  12. A tennis ball is dropped on the floor from a height of 20m. It rebound...

    Text Solution

    |

  13. The frictional force of the air on the body of mass 0.25kg, falling wi...

    Text Solution

    |

  14. A man weighing 100 kg carriesa load of 10kg on his head. He jumps from...

    Text Solution

    |

  15. Two masses of 10kg and 5kg are suspended from a rigid support as shown...

    Text Solution

    |

  16. A ship of mass 3xx10^(2)kg initially at rest is pulled by a force of 5...

    Text Solution

    |

  17. A 150 g ball, moving horizontally at 20m/s was hit straight back to bo...

    Text Solution

    |

  18. A block of mass 15kg is placed on a long trolley. The cofficient of fr...

    Text Solution

    |

  19. A rope lies on atable such that a part of it hangs down the table, whe...

    Text Solution

    |

  20. A block A of mass 2 kg rests on another block B of mass 8 kg which res...

    Text Solution

    |