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COSMOS: Complete Online <strong>Sol</strong>utions Manual Organization System<br />
Chapter 2, <strong>Sol</strong>ution 59.<br />
(a) For T AB to be a minimum<br />
TAB<br />
must be perpendicular to<br />
∴ α + 10° = 60°<br />
TAC<br />
T = 70 lb sin 30°<br />
(b) Then ( )<br />
AB<br />
or α = 50.0° <br />
or<br />
T = 35.0 lb <br />
AB<br />
Vector Mechanics for Engineers: Statics and Dynamics, 8/e, Ferdinand P. Beer, E. Russell Johnston, Jr.,<br />
Elliot R. Eisenberg, William E. Clausen, David Mazurek, Phillip J. Cornwell<br />
© 2007 The McGraw-Hill Companies.
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