Question

A gymnast with mass m_{1} = 47 kg is on a balance beam
that sits on (but is not attached to) two supports. The beam has a
mass m_{2} = 121 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.

1)

What is the force the left support exerts on the beam?

N

2)

What is the force the right support exerts on the beam?

N

3)

How much extra mass could the gymnast hold before the beam begins to tip?

kg

4)

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?

N

5)

What is the force the right support exerts on the beam?

N

6)

At what location does the gymnast need to stand to maximize the force on the right support?

at the center of the beam

at the right support

at the right edge of the beam

Answer #1

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 = 121 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.
1)
What is the force the left support exerts on the beam?
N
2)
What is the force the right support...

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of the way from each end. Initially the gymnast stands at the left
end of the beam.
How much extra mass could the gymnast hold before the beam
begins to tip?
Now the gymnast (not holding any additional...

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mass m2 = 118 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.
1.How much extra mass could the gymnast hold before the beam
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