The value of ‘g’ (acceleration due to gravity) is maximum at _______

The value of acceleration due to gravity at the moon is (1/6) Th of acceleration due to gravity at the surface of the earth and the diameter of the moon is (1/40) of the diameter of the earth. What is the ratio of the velocities on the moon and on the earth?

Planet Z is 13,000 km in diameter. THe acceleration due to gravityon Planet Z is 7.0m/s2.

A) what is the mass of planet Z?
____________kg

B) what is the acceleration due to gravity 10,000 km above planetZ's north pole?
___________m/s2

A single pendulum has a period of 2 sec at a place where the acceleration due to gravity is 9.8m/s^2. What will be the period when it is taken to a place where the acceleration due to gravity is 9.86m/s^2.