ch12-p017 - 17. The (vertical) forces at points A, B and P...

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17. The (vertical) forces at points A, B and P are F A , F B and F P , respectively. We note that F P = W and is upward. Equilibrium of forces and torques (about point B ) lead to 0 0. AB A FFW bW aF ++= −= (a) From the second equation, we find F A = bW / a = (15/5) W = 3 W = 3 3(900 N)=2.7 10 N × . (b) The direction is upward since
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This note was uploaded on 05/17/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.

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