Question

The value of radius of earth is? a)6.38×10^-6m b)6.38×10^6m c)63.8×10^-6m d)63.8×10^6m​

Answer 1

Answer:

What should be the length of a simple pendulum on the surface of the moon if its period does not differ from that on the surface of the earth? Mass of earth is 80 times that of the moon and radius of the earth is 4 times that of the moon.