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In: Physics

A large wrecking ball is used to destroy an old building. The operator uses a maximum...

A large wrecking ball is used to destroy an old building. The operator uses a maximum angle of 6.0 ◦ . When the ball is at maximum amplitude, he starts timing the motion. He realizes that a full 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 are equal.

d. Had the operator used the same chain on the moon, would you expect the period to be larger or shorter? Explain.

e. The engineer in charge of the site thinks each cycle takes too long, so he asks the operator to use a lighter ball. What do you think about this?

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