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Question

Two particles of masses 1.0kg and 2.0kg are placed at a separation of 50cm. Assuming that the only forces acting on the particles are their mutual gravitation, find the initial accelerations of the two particles.

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Solution

The force between the particles will be

F=Gm1m2d2

Also, a1=Fm1=Gm2d2=(6.67X1011)(2)0.52=5.34X1010m/s2

a2=Fm2=Gm1d2=(6.67X1011)(1)0.52=2.67X1010m/s2

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