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July 28, 2014

Homework Help: Math: Calculus - Vectors

Posted by Anonymous on Tuesday, February 19, 2008 at 9:47pm.

Two forces of 90 N act on an object. The forces make an angle of 48 degrees to each other. Calculate the resultant force and the force that must be applied to the object to create equilibrium.

My work, using geometric vectors:

| r |^2 = 90^2 + 90^2 - 2(90)(90)cos132
| r | = 164.4 N

sin132 / 164.4 = sinx / 90
x = 24 degrees

Therefore the resultant force is 164.4 N, 24 degrees from 90 N.

*************MY QUESTION*********
-------- How do I find the equilibrium to this problem? Can you please provide a step by step solution?


Thanks

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