Can you find the gravity of the moon

The Moon's surface gravity is about 1/6th as powerful or about 1.6 meters per second per second. The Moon's surface gravity is weaker because it is far less massive than Earth. A body's surface gravity is proportional to its mass, but inversely proportional to the square of its radius.

4x 20 is 80 but if ther machine is broken then there is none you have to redo the test