Home
Class 11
PHYSICS
A rod of mass m and length l is kept on ...

A rod of mass m and length l is kept on a surface that has no friction. If a ball comes & hits the lower end with a velocity v, then the velocity of centre of mass will be

A

zero

B

along negative x-axis

C

along positive x-axis

D

cannot determined with the given data

Text Solution

Verified by Experts

The correct Answer is:
B
On rod a impulse is acting towards -ve x direction so momentum is generated in -ve x direction (impulse act by the ball)
Promotional Banner

Topper's Solved these Questions

  • PART TEST 6

    RESONANCE ENGLISH|Exercise Exercise|30 Videos

  • SEMICONDUCTORS

    RESONANCE ENGLISH|Exercise Exercise|29 Videos

Similar Questions

Explore conceptually related problems

A uniform rod of mass m and length L is at rest on a smooth horizontal surface. A ball of mass m, moving with velocity v_0 , hits the rod perpendicularly at its one end and sticks to it. The angular velocity of rod after collision is

A rod of mass m and length l hinged at the centre is placed on a horizontal surface. A bullet of mass m moving with velocity v strikes the end A of the rod and gets embedded in it. The angular velocity with which the systems rotates about its centre of mass after the bullet strikes the rod

A uniform thin rod of mass m and length l is standing on a smooth horizontal suface. A slight disturbance causes the lower end to slip on the smooth surface and the rod starts falling. Find the velocity of centre of mass of the rod at the instant when it makes an angle theta with horizontal.

A uniform rod of length l is spinning with an angular velocity omega=2v/l while its centre of mass moves with a velocity v . Find the velocity of the end of the rod.

A thin uniform rod of mass m and length l is kept on a smooth horizontal surface such that it can move freely. At what distance from centre of rod should a particle of mass m strike on the rod such that the point P at a distance l/3 from the end of the rod is instantaneously at rest just after the elastic collision?

A rod of length l is moving in a vertical plane ( x-y ) when the lowest point A of the rod is moved with a velocity v . find the a angular velocity of the rod and b velocity of the end B .

A particle of mass m=1 kg collides with the end with velocity v_(0)=6 ms^(-1) of a spinning rod of mass 2m and length l=1 m at the end of the rod. If the coefficient of restitution of collision e=(2//3), find the a. velocity of the particle b. angular velocity of the rod just after the impact.

A uniform rod of mass m and length / is hinged at upper end. Rod is free to rotate in vertical plane. A bail of mass m moving horizontally with velocity vo collides at lower end of rod perpendicular to it and sticks to it. The minimum velocity of the ball such that combined system just completes the vertical circle will be

A rod AB of mass M and length 8l lies on a smooth horizontal surface. A particle, of mass m and velocity v_(0) strike's the rod perpendicular to its length, as shown in Fig. As a result of the collision, the centre of mass of the rod attains a speed of v_(0)//8 and the particle rebounds back with a speed of v_(0)//4 . Find the following: a. The ratio M//m . b. The angular velocity of the rod about O . c. The coefficient of restitution 'e' for the collision. d. The velocities of the ends 'A' and 'B' of the rod, namely, v_(A) and v_(B) respectively.

A uniform rod of mass m=2 kg and length l is kept on a smooth horizontal plane. If the ends A and B of the rod move with speeds v and 2v respectively perpendicular to the rod, find the: a. angulr velocity of CM of the rod. b. Kinetic energy of the rod (in Joule).

RESONANCE ENGLISH-RIGID BODY DYNAMICS-Exercise
  1. A rod can rotate in a horizontal plane about its one end. A bead which...

    Text Solution

    |

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

    Text Solution

    |

  3. A rod of mass m and length l is kept on a surface that has no friction...

    Text Solution

    |

  4. If vec(tau)xxvec(L)=0 for a rigid body, where vec(tau)= resultant torq...

    Text Solution

    |

  5. A smooth tube of certain mass is rotated in a gravity-free Space and r...

    Text Solution

    |

  6. A smooth sphere A is moving on a frictionless horizontal plane with an...

    Text Solution

    |

  7. A body of mass m and radius r is rotated with angular velocity omega a...

    Text Solution

    |

  8. A uniform sphere of radius R is placed on a rough horizontal surface a...

    Text Solution

    |

  9. In the figure shown, a ball without sliding on a horizontal, surface. ...

    Text Solution

    |

  10. As shown in the figure, a disc of mass m is rolling without slipping a...

    Text Solution

    |

  11. When a sphere rolls without slipping the ratio of its kinetic energy o...

    Text Solution

    |

  12. A solid sphere, a hollow sphere and a disc, all having same mass and r...

    Text Solution

    |

  13. In the previous question the smallest kinetic energy at the bottom of ...

    Text Solution

    |

  14. A box of dimensions l and b is kept on a truck moving with an accelera...

    Text Solution

    |

  15. A rectangular block has a square base measuring axxa and its height is...

    Text Solution

    |

  16. A weightless rod is acted upon by upward parallel forces of 2N and 4N ...

    Text Solution

    |

  17. A circular disc X of radius R is made from an iron of thickness t, and...

    Text Solution

    |

  18. A solid spere is rotating freely about its symmetry axis in free space...

    Text Solution

    |

  19. A 'T' shaped object with dimension shown in the figure, is lying on a ...

    Text Solution

    |

  20. Angular momentum of the particle rotating with a central force is cons...

    Text Solution

    |