The period T of oscillation of a pendulum of length l is given by: T=2π√l/g

If the uncertainty in g is 2% and the uncertainty in l is 6%, what is the percentage uncertainty in T?

Contrast the force of gravity between these pairs of objects a 1 kg mass and a 2 kg mass that are 1 m apart and two 2 kg masses that are 1 m apart

When you jump from an elevated position you usually bend your knees upon reaching the ground. by doing this, you make the time of the impact about 10 times as great as for a stiff-legged landing. in this way the average force your body experiences is a) less than 1/10 as great. b) more than 1/10 as great. c) about 1/10 as great.d) about 10 times as great.

What is a subatomic particle with a negative charge and very little mass?