ive been wrestling with this for almost an hour and dont even know where to begin.(adsbygoogle = window.adsbygoogle || []).push({});

A)The .732M X 1.2M lid of ABCD of a storage bin is hinged along side AB and is held open by looping cord DEC over a frictionless hook at E. if the tension in the cord is 54, determine the moment about each axis of the force exerted by the cord at D. the lid is opened .132 m along DC.

here are the coordinates of each point

A(0)

B(1.2 i)

C(1.2 i + .132j + .732 k)

D(.732 k)

E(.36 i + .132 j +.852 j)

B)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 man applies a 200 lb force to end A of the rope and that the moment about of the force about the y-axis is 175 ft-lb, find the distance a.

the force is going along AB. in components it is -6i + 16j + Xk. the distance, a, is the z coordinate of point B.

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# Homework Help: A few statics problems

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