Question

does the value of universal constant vary from earth to the moon​

Answer 1

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Yeah, it varies.

What is the value of universal gravitational constant on moon?

1.625 m/s².

The acceleration due to gravity on the surface of the Moon is about 1.625 m/s², about 16.6% that on Earth's surface or 0.166 ɡ.

What is the value of universal gravitational constant on earth ?

9.8m/s²

Its value is 9.8 m/s2 on Earth. That is to say, the acceleration of gravity on the surface of the earth at sea level is 9.8 m/s².