Engineering Statics

E-7


A 24 pound square plate shown is supported by three vertical wires. Determine the tension in each wire when a is 10 inches. Additionally, determine the value of a for which the tension in each wire is 8 pounds.

For the first part two moment equations about axes in 
the x and z direction the center of gravity of the slab 
and a force equation are written.


The three equations above are solved simultaneously on the 
calculator.
For the second part the three tensions are set equal to 8 lbs. 
The moment equation is then written about the x-axis located 
at the center of gravity G.