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I HE 270 — Summer 2006
Examination No. 1
PROBLEM N0. 1 Given: Someone is trying to break off a tree branch as show in the figure below.
Looks a little dangerous to THE. This should only be done by a professional. Find: Assuming that the magnitude of the moment necessary to break the branch is {r 250 thr what force is re uireci to break the branch? What is the component
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Examination No. 1
PROBLEM NO. 2 Given: The semi—circular plate has a radius of 40 cm. The plate weighs 100 N with the
center of gravity at (d, 0, 0). Find: First, draw a free body diagram of the semicircular plate, assuming the connection at C is a ball—and—socket joint. Then calculate the forces at C and the tensions in
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Examination No. 1
PROBLEM NO. 3 Given: Below is a Warren Bridge Truss. The total vertical height of the bridge is 10
feet and each triangle has a base of length, L = 8ft. Find: Determine the load carried by members DE DE, and EG. State whether these
members are in tension or in compression. Note: A free body diagram must accompany each equilibrium equation used in your
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 Spring '09
 Warren bridge truss, Examination No.

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