4.  The screw eye in the figure at the left is subjected to two forces F1 and F2.  Determine the magnitude and direction of the resultant force.

test5-4a.jpg (12652 bytes)

Solution:

Parallelogram Law:

test5-4b.jpg (25504 bytes)

Calculate angles:

Angle COA = 900 -150-100 = 65

Angle OAB = 1800 -650= 115

Triangular construction:

test5-4c.jpg (15879 bytes)

Find FR from law of cosines and q from law of sines.
Angle f = q + 150 

 

 

�This site is copyrighted by Simin Nasseri and the School of AMME, the University of Sydney (2003). All rights reserved.

sulogo.jpg (8055 bytes) ammelogo.jpg (6442 bytes)
Sydney University School of AMME