Homework Help: Physics

Posted by Jenn on Saturday, March 19, 2011 at 8:13pm.

A uniform board 12 ft long weighs 10 lbs. Two feet from the left is centered a 3 lbs. structure. How far from the left end is the balance point i.e. the point at which if you applied 13 lbs. upward force would balance the board and structure??

Physics - Damon, Saturday, March 19, 2011 at 8:22pm
total weight = 10 + 3 = 13
13 x = 6(10) + 3(2) = 66
x = 66/13 = 5.08 ft
Physics - Jenn, Saturday, March 19, 2011 at 8:42pm
thanks so much
Physics - Damon, Saturday, March 19, 2011 at 9:02pm
You are welcome :)

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