The period of moon's revolution round the earth is nearly 29 days. If moon's mass were two-fold its present value, and all other things remained unchanged, the period of moon's rotation

Question

The period of moon's revolution round the earth is nearly 29 days. If moon's mass were two-fold its present value, and all other things remained unchanged, the period of moon's rotation would be nearly

TestHub · Accepted Answer

The time period of revolution of a satellite is $T = 2 π \frac{r ^{3}}{GM}$ , which depends on the mass of the earth and the orbital radius - not on the mass of the moon. So even if the moon's mass were doubled, its period would remain nearly 29 days.

Ans (D)

Question with Solution

Options:

Doubts & Discussion