HW1_Soln_F10 - − ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ − 2 1 2 1 2 4...

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SOLUTION SOLUTION ECE 455/555: Mechanics of Engineering Systems Fall 2010 HOMEWORK #1 1. A uniform beam of mass M and length r has weights W 1 and W 2 at two positions, as illustrated below. Find the position x such that the normal force at O will be 2 1 W . Sum Forces in y Direction p o b N N W W W + = + + 2 1 W 2 N o y W 1 N p x W b W 1 W 2 O P r x r/2 d r/4
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