Numerical

Asked by KANIKAKHARBANDA | 3rd Jan, 2010, 01:18: PM

Expert Answer:

Since the units of the distance between earth and moon is 3.8x105 km

The centripetal force required for circular motion is provided by the gravitational force between earth and moon.

mV2/r = GMm/r2

V = (GM/r)1/2

= (6.67x10-11x6.1x1024)/(3.8x108))1/2 = 1.06 x 103 m/s

The speed of moon = 1.06 km/s

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Answered by  | 3rd Jan, 2010, 02:17: PM

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