(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

i need to calculate the d for a 45 degree drop of pendulum that the lenght is .44m. i did the one for 90 degrees but i cant figure out how to get a different outcome.

2. Relevant equations

ug initial= KE + Ug final

mgh=0.5mv^2=mgh

gl=0.5rg+g2r

l=0.5r+2r

l=0.5(l-d)+2(l-d)

l=5/2l-5/2d

l=d+r

r=l-d

v^2=rg

m(v^2/r)=mg

3. The attempt at a solution

i got 26.4 cm

L=.44m

dexp=.28 @90 degrees

dexp=.41 @ 45 degrees

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# Homework Help: Peg and pendulum help!

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