Question: To lift a heavy crate, a man uses a block and tackle attached to the bottom of an I-beam at hook B. Knowing that the

To lift a heavy crate, a man uses a block and tackle attached to the bottom of an I-beam at hook B. Knowing that the moments about the y and z axes of the force exerted at B by portion AB of the rope are, respectively, 100 lb ⋅ft and −400 lb ⋅ ft , determine the distance a.

To lift a heavy crate, a man uses

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