Question

Prove that the resulting force from the two springs is equal to F = -2kx ( 1 - L/(sqrt(L^2 +x^2)) .
What I did was to separate each component for each force.
Fx = - kx cos theta - kx cos theta = -2kx cos theta.
Fy = kx sin thetha - kx sin theta = 0

I try to switch cos theta but I won't reach the answer.

\[F = -2kx ( \frac{ x^2 }{ \sqrt(L^2 + x^2) })\]

http://img805.imageshack.us/img805/8127/asfdasf.png

Answer 1

c if this helps

Answer 2

What did you do in the part where you crossed it

Answer 3

just taken the components

Answer 4

ahh

Answer 5

did you get it

Answer 6

Yeaa, the minimium I can compress it, it's L

Answer 7

k then bye.

Answer 8

Thanks, alot! :D