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A gymnast with mass m1 = 47 kg is on a balance beam that sits on (but is not attached
to) two supports. The beam has a mass m2 = 120 kg and length L = 5 m. Each support is
1/3 of the way from each end. Initially the gymnast stands at the left end of the beam.

Now the gymnast (not holding any additional mass) walks directly above the right
support.
What is the force the left support exerts on the beam?
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5) What is the force the right support exerts on the beam?
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