A 40 kg, 5.0-m-long beam is supported by, but not attached to, the two posts A and B in the figure. A 20 kg boy starts walking along the beam and stops 1.2 m from the right end of the beam. The beam does not tip. A B 3.0 m a) Draw a fully labelled force diagram for the beam. b) Calculate the magnitude of the force exerted by the post B on the beam.

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Author:Raymond A. Serway, Chris Vuille
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Chapter1: Units, Trigonometry. And Vectors
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A 40 kg, 5.0-m-long beam is supported by, but not attached to, the two posts A and B
in the figure. A 20 kg boy starts walking along the beam and stops 1.2 m from the right
end of the beam. The beam does not tip.
A
B
3.0 m
a) Draw a fully labelled force diagram for the beam.
b) Calculate the magnitude of the force exerted by the post B on the beam.
Transcribed Image Text:A 40 kg, 5.0-m-long beam is supported by, but not attached to, the two posts A and B in the figure. A 20 kg boy starts walking along the beam and stops 1.2 m from the right end of the beam. The beam does not tip. A B 3.0 m a) Draw a fully labelled force diagram for the beam. b) Calculate the magnitude of the force exerted by the post B on the beam.
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