Home
Class 11
PHYSICS
Both the blocks as shown in figure are g...

Both the blocks as shown in figure are given together a horizontal velocity towards right. The acceleration of the centre of mass of the system of block is `(m_(A) = 2m_(B) = 2kg)`.

A

Zero

B

`(5/3)ms^(-2)`

C

`(7/3) ms^(-2)`

D

`2 ms^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
D

`a_(CM)` = (External force)/(Total mass)
= Force of friction from ground/Total mass
`(0.2 xx(2+1)(10))/(1+2) = 2ms^(-1)`
Promotional Banner

Topper's Solved these Questions

  • CENTRE OF MASS

    DC PANDEY ENGLISH|Exercise Assertion and reason|21 Videos
  • CENTRE OF MASS

    DC PANDEY ENGLISH|Exercise Match the coloumns|9 Videos
  • CENTRE OF MASS

    DC PANDEY ENGLISH|Exercise Check points|50 Videos
  • CALORIMETRY AND HEAT TRANSFER

    DC PANDEY ENGLISH|Exercise Medical entrance s gallery|38 Videos
  • CENTRE OF MASS, IMPULSE AND MOMENTUM

    DC PANDEY ENGLISH|Exercise Comprehension type questions|15 Videos

Similar Questions

Explore conceptually related problems

The acceleration of the 10 kg mass block shown in the figure is : -

Two blocks of masses m_1 and m_2 are connected as shown in the figure. The acceleration of the block m_2 is :

Two blocks of masses m_1 and m_2 are connected by a spring of spring constant k figure. The block of mass m_2 is given a shape impulse so that it acquires a velocity v_0 towards right. Find a. the velocity of the centre of mass b. the maximum elongation that the spring will suffer.

Two block of masses m_(1) and m_(2) are connected as shown in the figure. The acceleration of the block m_(2) is:

Blocks A and B shown in the figure are having equal masses m. The system is released from rest with the spring unstretched. The string between A and ground is cut, when there is maximum extension in the spring. The acceleration of centre of mass of the two blocks at this instant is

Two blocks of masses m_(1) and m_(2) , connected by a weightless spring of stiffness k rest on a smooth horizontal plane as shown in Fig. Block 2 is shifted a small distance x to the left and then released. Find the velocity of centre of mass of the system after block 1 breaks off the wall.

A block of mass m is placed on a smooth inclined wedge ABC of inclination theta as shown in the figure. The wedge is given an acceleration a towards the right. The relation between a and theta for the block to remain stationary on the wedge is.

Consider the system shown in figure Mass of block A= 3m , Mass of block B= 2m . Find the acceleration of A and B.

A block of mass 10 kg is moving on a rough horizontal surface as shown in figure. At t=0 , velocity of block is 10 m/s towards left and a constant force F= 10 N acts horizontally towards right. Acceleration of the block at t=3s is ( g= 10 m s^(-2) )

Block A is kept on block B as shown in figure. It is known that acceleration of block A is 2 m//s^(2) towards right and acceleration of block B is 3 m//s^(2) towards right under the effect of unknown forces. Direction of friction force acting on A by B (mu_(AB) = 0.3)

DC PANDEY ENGLISH-CENTRE OF MASS-Taking it together
  1. A particle of mass 'm' moving with a velocity (3 hat(i)+2hat(j))m//s c...

    Text Solution

    |

  2. A mass of 10 gm moving with a velocity of 100 cm / s strikes a pendulu...

    Text Solution

    |

  3. Both the blocks as shown in figure are given together a horizontal vel...

    Text Solution

    |

  4. A ladder is leaned against a smooth wall and it is allowed to slip on ...

    Text Solution

    |

  5. A circular plate of diameter d is kept in contact with a square plate ...

    Text Solution

    |

  6. A circular ring of mass 6kg and radius a is placed such that its cente...

    Text Solution

    |

  7. In a gravity free space, man of mass M standing at a height h above th...

    Text Solution

    |

  8. A ball falls freely from a height of 45m. When the ball is at a height...

    Text Solution

    |

  9. Two blocks of msses 10 kg and 30 kg are placed along a vertical line....

    Text Solution

    |

  10. In a free space a rifle on mass M shoots a bullet of mass m at a stati...

    Text Solution

    |

  11. A cracker is thrown into air with a velocity of 10 m//s at an angle of...

    Text Solution

    |

  12. A 2 kg block of wood rests on a long table top. A 5 g bullet moving ho...

    Text Solution

    |

  13. If kinetic energy of a body is increased by 300%, then percentage chan...

    Text Solution

    |

  14. If the linear momentum is increased by 50%, then KE will be increased...

    Text Solution

    |

  15. If the kinetic energy of a body increases by 0.1 % the percent increas...

    Text Solution

    |

  16. A bullet moving with a speed of 100 ms^(-1) can just penetrate into tw...

    Text Solution

    |

  17. A ball is thrown vertically downwards from a height of 20m with an int...

    Text Solution

    |

  18. A ball of mass m is released from the top of an inclined plane of incl...

    Text Solution

    |

  19. Two blocks A and B. each of mass m, are connected by a massless spring...

    Text Solution

    |

  20. A man of mass M stands at one end of a stationary plank of length L, l...

    Text Solution

    |