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wchvball13
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Homework Statement
A uniform plank of length 4.6 m and weight 210 N rests horizontally on two supports, with 1.1 m of the plank hanging over the right support. To what distance x can a person who weighs 448 N walk on the overhanging part of the plank before it just begins to tip?
Homework Equations
W1(x1)=W2(x2) = Xcm
W1+W2
The Attempt at a Solution
210(3.5) + 658(1.1)
210 + 448
Xcm=1.87m
Not even sure if this is right, and I'm stuck after this. The way I understand it, once the center of gravity passes the second support, the plank will start to tip. But I don't know how to figure out how to calculate how far the person can walk before the center of gravity gets to that point.
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