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A 20.0-m-long uniform beam weighing 700 N rests on walls A and B,
a) Find the maximum weight of a person who can walk to the extreme end D without tipping the beam.
b) Find the forces that the walls A and B exert on the beam when the person is standing at D .
c) Find the forces that the walls A and B exert on the beam when the person is standing at a point 3.0 m to the right of B .
d) Find the forces that the walls A and B exert on the beam when the person is standing 1.8 m to the right of A .
Sagot :
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