A large wrecking ball is used to destroy an old building. Theoperator uses a maximum angle of 6.0 â—¦ . When the ball is atmaximum amplitude, he starts timing the motion. He realizes that afull cycle and find that it lasts 7 s.
a. How long is the chain that holds the wrecking ball?
b. Find s(t) or θ(t).
c. Find θ such that the potential and kinetic energies areequal.
d. Had the operator used the same chain on the moon, would youexpect the period to be larger or shorter? Explain.
e. The engineer in charge of the site thinks each cycle takestoo long, so he asks the operator to use a lighter ball. What doyou think about this?
