Thread: the derrick crane problem: help me!

A simple derrick crane (see real picture under the folder "Diagrams") is constructed as in Figure (under Diagrams) with axes as indicated. The wires AP and BP are in tension, and the arm of the derrick, PC is loaded with a weight W at C. The x and y components of the forces at P are always in equilibrium. Determine the range of the angle theta ( ) that will ensure that the tensions T1 and T2 are always positive and hence the wires will not slacken.

Originally Posted by giojr

A simple derrick crane (see real picture under the folder "Diagrams") is constructed as in Figure (under Diagrams) with axes as indicated. The wires AP and BP are in tension, and the arm of the derrick, PC is loaded with a weight W at C. The x and y components of the forces at P are always in equilibrium. Determine the range of the angle theta ( ) that will ensure that the tensions T1 and T2 are always positive and hence the wires will not slacken.

Asked here: http://www.mathhelpforum.com/math-he...ck-cranes.html

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