In the figure, a 68kg man walks out on a 20kg beam that rests on, but is not att

Question

In the figure, a 68kg man walks out on a 20kg beam that rests on, but is not attached to, two supports.

Part A

When the beam just starts to tip, what is the force exerted on the beam by the right support?

Express your answer to two significant figures and include the appropriate units.

In the figure, a 68kg man walks out on a 20kg beam that rests on, but is not attached to, two supports. Part A When the beam just starts to tip, what is the force exerted on the beam by the right support? Express your answer to two significant figures and include the appropriate units.

Explanation / Answer

vertical forces

weight of the man downwards

weight of the rod downwards

net downward force = [20+68] x 9.8 = 862.4 N

now just when the bar tips it will loose contact with the left suppot and the entire vetical force will be balance by the right support

force exerted by the right support = total downward force = 862.40N

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