- #1

ElTaco

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## Homework Statement

There are two forces P and Q that are applied to a crate, with their respective magnitudes 100 and 200 N. One is applied at an angle upward with angle theta, and one is applied at an angle downward with angle phi. Both have positive horizontal components and the sum of the two forces has a magnitude of 250 N directly horizontal to the right. I need to find the angles theta and phi.

## Homework Equations

None explicitly given.

## The Attempt at a Solution

100sin(theta) = 200sin(phi)

100cos(theta) + 200cos(phi) = 250

theta = arcsin(2sin(phi))

Then I plug it in and cannot solve.

Another route I tried was keeping P and Q in instead of substituting in their magnitudes.

Psin(theta) = Qsin(phi)

Pcos(theta) + Qcos(phi) = 250

P = Qsin(phi)/sin(theta)

Qsin(phi)/tan(theta) + Qcos(phi) = 250

Again I cannot finish solving.

If something was badly worded or confusing please let me know. This problem is from a book so rather than writing the problem as exactly stated, I had to add some more information because there was a picture as well. Thanks for your time, I'm really stuck on this.

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