Question

Two particles of masses 1kg and 2kg are placed at a separation of 50cm.Assuming that the only forces acting on the particles are their mutual gravitation.The initial acceleration of the two particles are

Answer 1

Using universal law of gravitation

Acceleration is Gm1m2/r^2

50cm=0.5m

r^2=0.5^2

=0.25

G=6. 67*10^-11

M1M2=2*1=2

Force=6.67*2*10^-11/0.25

5.336*10^-12 Newton

Acceleration of particles are F/M SECOND LAW OF MOTION

A of particle one is (5.336*10^-12)/1

=5.336*10^-12m/s2

A of particle 2 is (5.336*10^-12)/2

=2.668*10^-12m/s2

Answer 2

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