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Where will be the centre of mass on comb...

Where will be the centre of mass on combining two masses m and `M(M gt m)`?

A

Towards m

B

Towards M

C

Between m and M

D

Anywhere

Text Solution

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The correct Answer is:
B
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Knowledge Check

  • The reduce mass of two particles having masses m and 2 m is

    A
    2 m
    B
    3 m
    C
    2 m/3
    D
    m/2

  • The centre of mass of a system of two particle of masses m_1 and m_2 is at a distance d_1 from m_1 and at a distance d_2 from mass m_2 such that.

    A
    `(d_1)/(d_2) = (m_2)/(m_1)`
    B
    `(d_1)/(d_2) = (m_1)/(m_2)`
    C
    `(d_1)/(d_2) = (m_1)/(m_1 + m_2)`
    D
    `(d_1)/(d_2) = (m_2)/(m_1 + m_2)`

  • A pair of stars rotates about their centre of mass One of the stars has a mass M and the other has mass m such that M =2m The distance between the centres of the stars is d (d being large compared to the size of either star) . The ratio of kinetic energies of the two stars (K_(m) //K_(M)) is .

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