A space explorer lands on a new plant, and he wants to determin the gravity on it. He makes a pendulum with a lengh of 800 mm and he observes it does 24 full swings in 1min and 20 seconds. What is the acceleration of gravity to be from this ?
The Attempt at a Solution
=2pie multiplied by square root of (lenth of the pendulum over gravity.
period= 80/24=3.333333. gravity = 2.8
Is this right what i did, any help would be great