Will a pendulum clock lose or gain time when taken to the top of a mountain?

A pendulum clock becomes

Will pendulum clock lose or gain time on hills or inside the mines ?

A pendulum clock, which keeps correct time at sea level, loses 15s per day when taken to the top of a mountain. If the radius of the earth is 6400km , the height of the mountain is

When a pendulum clock gains time, what adjustiment should be made?

A simple pendulam loses 50 s when taken to the top of a hill. Find the height of the hill. Radiius of earth = 6400 km.

The ratio of the height of the mountain and the depth of a mine, if a pendulum swings with the same period at the top of the mountain and at the bottom of the mine is

A pendulum clock keeping correct time is taken to high altitudes

A pendulum clock thast keeps correct time on the earth is taken to the moon. It will run

If a pendulum swings with the same period at the top of the mountain and at the bottom of the mine then the ratio between height H of a mountain and the depth h of a mine is :