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_{0}it must have to just barely make it over the top and not oscillate?

This is what I did:

[tex]\Delta K=mgh\implies v_0=\sqrt{v^2-2gh}[/tex]

but at the top, v is zero so it can be written as:

[tex]v_0=\sqrt{-2gh}[/tex]

and h in this case is L+Lcosθ, so using g=-10m/s

^{2}I get:

[tex]v_0=\sqrt{20L\left(1+\cos{\theta}\right)}[/tex]

but whenever I plug in values for θ and L, I get the

**wrong**answer. I can't see what I did wrong.

Any ideas?

Thanks a lot.