ch12-p019 - 19. (a) With the pivot at the hinge, Eq. 12-9...

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19. (a) With the pivot at the hinge, Eq. 12-9 gives TL cos θ mg L 2 = 0 . This leads to 78 . Then the geometric relation tan = L/D gives D = 0.64 m. (b) A higher (steeper) slope for the cable results in a smaller tension.
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