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Systems of Part...

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  • Question 1
    4 / -1

    A particle of mass m moves along line PC with velocity v as shown. What is the angular momentum of the particle about O?

  • Question 2
    4 / -1

    A thin and circular disc of mass M and radius R is rotating in a horizontal plane about an axis passing through its centre and perpendicular to its plane with an angular velocity ω. If another disc of same dimensions but of mass M/4 is placed gently on the first disc co–axially, then the new angular velocity of the system is

  • Question 3
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    The angular speed of a body changes from ω1 to ω2 without applying a torque but due to change in its moment of inertia. The ratio of radii of gyration in the two cases is

  • Question 4
    4 / -1

    Angular momentum of a system of particles changes when

  • Question 5
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    If a force acts on a body at a point away from the centre of mass, then

  • Question 6
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    The rotational kinetic energy of a body is E and its moment of inertia is I. The angular momentum is

  • Question 7
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    What remains constant in the field of central force?

  • Question 8
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    A cockroach is moving with velocity v in anticlockwise direction on the rim of a disc of radius R of mass m. The moment of inertia of the disc about the axis is I and it is rotating in clockwise direction with an angular velocity ω. If the cockroach stops, the angular velocity of the disc will be

  • Question 9
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    The principle of conservation of angular momentum, states that angular momentum

  • Question 10
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    A particle performs uniform circular motion with an angular momentum L. If the frequency of a particle\'s motion is doubled and its kinetic energy is halved, the angular momentum becomes

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