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Standard X

Physics

Orbit of Artificial Satellites

Two particles...

Question

Two particles of masses $2 m$ and $3 m$ 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 $\frac{d}{2}$ apart is:

Zero

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\frac{12 G m}{d^{2}}

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\frac{8 G m}{d^{2}}

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\frac{24 G m}{d^{2}}

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Solution

The correct option is A Zero
Gravitational force is the central force
Here, there is no external force . So acceleration of central of mass is zero
Hence,
option $A$ is correct answer.

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Two particles of masses 2m and 3m 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 d2 apart is:

The correct option is A ZeroGravitational force is the central forceHere, there is no external force . So acceleration of central of mass is zeroHence,option A is correct answer.

Two particles of masses $2 m$ and $3 m$ 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 $\frac{d}{2}$ apart is:

The correct option is A Zero
Gravitational force is the central force
Here, there is no external force . So acceleration of central of mass is zero
Hence,
option $A$ is correct answer.