Two particles of mass m and 2 m are at a distance d apart. Under their mutual gravitational force they start moving towards each other. The acceleration of their centre of mass when they are d/2 apart is :

m / d^{2}

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m / d^{2}

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m / d^{2}

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zero

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Solution

The correct option is D zero
As the mutual gravitational force due to the masses is an internal force to the system , acceleration of center of mass is zero.

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Two particles of mass m and 2 m are at a distance d apart. Under their mutual gravitational force they start moving towards each other. The acceleration of their centre of mass when they are d/2 apart is :

The correct option is D zeroAs the mutual gravitational force due to the masses is an internal force to the system , acceleration of center of mass is zero.

The correct option is D zero
As the mutual gravitational force due to the masses is an internal force to the system , acceleration of center of mass is zero.