A pendulum has a mass of 3-kg, a length of 3 meters and swings through a (half)arc of .47 radians. To the tenth of a Joule, what is its Total Energy?

Answer 1

M*g*(distance that it rises)
= 3.0 kg*9.8 m/s^2*(1 - cos0.47rad)

Crunch the numbers.

Answer 2

So therefore the answer is 3.2 J?

Answer 3

I get that also

Answer 4

Sweet thanks for your help!