Home
Class 11
PHYSICS
In the given figure a ball strikes a uni...

In the given figure a ball strikes a uniform rod of same mass elastically and rod is hinged at point `A`. Then which of the statements `(s) is//are` correct ?
.

A

linear momentum of system (ball+rod) is conserved

B

angular momentum of system about hinged point A is not conserved

C

kinetic energy of system is conserved

D

linear momentum of ball is conserved.

Text Solution

Verified by Experts

The correct Answer is:
C
Collision is elastic and work of hinge force =0 so K.E. energy of system is conserved
hinge force does not produce angular momentum about hinge so angular momentum about hinge is conserved. Due to impulse of hinge the linear momentum is not conserved.
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

In the figure a uniform rod of mass 'm' and length 'l' is hinged at one end and the other end is connected to a light vertical of spring constant 'k' as shown in figure. The spring has extension such that rod is equilibrium when it is horizontal . The rod rotate about horizontal axis passing through end 'B' . Neglecting friction at the hinge find (a) extension in the spring (b) the force on the rod due to hinge.

Figure shows a composite system of two uniform rods of lengths as indicated. Then the coordinate of the center of mass of the system of rods are

Figure shows a composite system of two uniform rods of lengths as indicated. Then the coordinate of the center of mass of the system of rods are

Two particles each of mass m are attached at end points of a massless rod AB of length l. Rod is hinged at point C as shown. Rod is released from rest from horizontal position. At the instant when rod reaches its vertical position as shown, which of the following is / are correct:

In the figure shown, the spring are connected to the rod at one end and at the midpoint. The rod is hinged at its lower end. Rotational SHM of the rod (Mass m , length L ) will occur only if-

Two uniform solid of masses m_(1) and m_(2) and radii r_(1) and r_(2) respectively, are connected at the ends of a uniform rod of length l and mass m . Find the moment of inertia of the system about an axis perpendicular to the rod and passing through a point at a distance of a from the centre of mass of the rod as shown in figure.

A rod of mass 5 kg is connected to the string at point B. The span of rod is along horizontal. The other end of the rod is hinged at point A. If the string is massless, then the reaction of hinge at the instant when string is cut, is (Take, g=10 ms^(-2) )

The figure shows a uniform rod lying along the X-axis. The locus of all the points lying on the XY-plane, about which the moment of inertia of the rod is same as that about O is

An infinite nonconducting sheet has surface charge density s. There is a small hole in the sheet as shown in the figure. A uniform rod of length l having linear charge density lambda is hinged in the hole as shown. If the mass of the rod is m, then the time period of oscillation for small angular displacement is

In the figure shown, forces of equal magnitude are applied to the two ends of a uniform rod. Consider A as the cross-sectional area of the rod. For this situation, mark out the incorrect statements.

RESONANCE ENGLISH-RIGID BODY DYNAMICS-Exercise
  1. S(1): Net torque on a system due to all internal force about any point...

    Text Solution

    |

  2. A rigid body is in pure rotation, that is, undergoing fixed axis rotat...

    Text Solution

    |

  3. A particle falls freely near the surface of the earth. Consider a fixe...

    Text Solution

    |

  4. A particle has a linear momentum p and position vector r. the angular ...

    Text Solution

    |

  5. In the given figure a ball strikes a uniform rod of same mass elastica...

    Text Solution

    |

  6. A disc of circumference s is at rest at a point A on horizontal surfac...

    Text Solution

    |

  7. A hole of radius R/2 is cut from a thin circular plate of raduis R as ...

    Text Solution

    |

  8. A uniform disc of mass m and radius R is rolling up a rough inclined p...

    Text Solution

    |

  9. A uniform cube of side a and mass m rests on a rough horizontal table....

    Text Solution

    |

  10. If radius of the earth contracts to half of its present value without ...

    Text Solution

    |

  11. A disc of mass M and radius R is suspended in a vertical plane by a ho...

    Text Solution

    |

  12. A particle performing uniform circular motion has angular momentum L. ...

    Text Solution

    |

  13. A small ball of radius r rolls down without sliding in a big hemispher...

    Text Solution

    |

  14. A solid iron sphere A rolls down an inclined plane, while another holl...

    Text Solution

    |

  15. A solid sphere and a solid cylinder having the same mass and radius, r...

    Text Solution

    |

  16. A ring, a disc a sphere and spherical shells are simutaneously release...

    Text Solution

    |

  17. Consider a wheel of a bicycle rolling on a level road at a linear spee...

    Text Solution

    |

  18. Statement 1: A solid sphere and a hollow sphere of same radius and sam...

    Text Solution

    |

  19. Statement-1: if moment of inertia of a rigid body is equal about two a...

    Text Solution

    |

  20. Statement-1 : A thin uniform rod is undergoing fixed axis rotation abo...

    Text Solution

    |