ch12-p023 - 23. (a) All forces are vertical and all...

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23. (a) All forces are vertical and all distances are measured along an axis inclined at θ = 30º. Thus, any trigonometric factor cancels out and the application of torques about the contact point (referred to in the problem) leads to () 22 3 tripcep 15kg 9.8m/s 35cm 2.0kg 9.8m/s 15cm = =1.9 10 N. 2.5cm F × (b) The direction is upward since
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