(adsbygoogle = window.adsbygoogle || []).push({}); Particle statics- Three forces on force table

I have the following problem:

Three forces of magnitude 10, 25, 30 dynes are in equilibrium on a force table.

a) find the angles between the forces algebraicly.

b) find the angles graphically

Here is how I attempted to solve a):

I considered one force to be my "force of reference", making it parallel to the x axis and its vector pointing towards positive x.

Then I tried to find the angles that the other forces make with the x axis by means of a two equation system, one for the X and one for the Y componants of the forces, from which I know that their sum must equate 0.

Im stumped here, equation contains the angles in their sin form and the other contains them as cos, so not knowing any angle doesnt really give me two unknowns, but four.

Thankyou.

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# Homework Help: Particle statistics- Three forces on force table

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