Solve for P, U(W-P) = 0

[erkme73]

I'm almost to embarrassed too even post this question. I'm taking a physics class, and some of the elementary alegraic manipulation has me scratching my head.

The actual formula is Us(W-P) = 0, and I'm supposed to set the equation to solve for P. The solutions manual has the final equation listed as P = UsW / 1+Us, but I'm absolutely snowed on how they got that.

Any help would be appreciated.

[stapel_eliz]

The actual formula is Us(W-P) = 0, and I'm supposed to set the equation to solve for P. The solutions manual has the final equation listed as P = UsW / 1+Us, but I'm absolutely snowed on how they got that.

I'm "snowed", too, because their answer is incorrect. The original equation tells you that either Us = 0 or else W - P = 0. In the first case, you can't solve for "P=". In the second case, You'd get W = P.

I'm guessing that there's a typo in the original equation. Ask your instructor.