Question

The acceleration due to gravity on the surface of moon is 1.7 m/s². What is the time period of simple pendulum on moon if its time period on the earth is 3.5s? 

Answer 1

If l = length of simple pendulum, 

T = Time Period 

g = Acceleration due to gravity.

g₁ = Acceleration due to gravity on moon = 1.7 m | S² 

g = Acceleration due to gravity on earth = 9.8m | s² 

Dividing equation 2) by (1)