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COSMOS: Complete Online <strong>Sol</strong>utions Manual Organization System<br />
Chapter 2, <strong>Sol</strong>ution 76.<br />
(a) ( )<br />
F =− 1900 N sin 20° sin 70°<br />
x<br />
=− 610.65 N<br />
F =− 611 N !<br />
x<br />
( )<br />
F = 1900 N cos 20°<br />
y<br />
= 1785.42 N<br />
F = 1785 N !<br />
y<br />
( )<br />
F = 1900 N sin 20° cos70°<br />
z<br />
= 222.26 N<br />
F = 222 N !<br />
z<br />
(b)<br />
cos<br />
θ x<br />
=<br />
−610.65 N<br />
1900 N<br />
or θ x = 108.7°!<br />
1785.42 N<br />
cosθ y =<br />
1900 N<br />
or θ y = 20.0°!<br />
cosθ =<br />
z<br />
222.26 N<br />
1900 N<br />
or θ z = 83.3°!<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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