You release a pendulum of mass 1kg from a height of 0.75 m. 1. if the pendulum loses 18% of its initial energy by the time it reaches the bottom how fast is it going when it reaches the bottom?

2. if the pendulum loses another 7% of its remaining energy by the time it reaches the other side, how high up does it go?

c

explanation:

15.3 cos 65 degrees trig

hi there!

out of the two, (b) precision would be more reasonable.   however, both a and b could be pretty reasonable.

-awesomerepublic   : )

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