# Pendulum problem i really need help

for smaller i got 1.06565
larger i got .840562

rl.bhat
Homework Helper
cos(theta) cannot be more than one. Take delta h positive in both the cases.

Ok so i got part a) to this problem answered but for part b) i have no clue on how to start solving for that one can someone point me in the right direction?

with this formula i found delta h to be =.017m
delta(h)=l-lcos
l=lenght
and then i plugged that in for mgh=PE
(.065)(9.8)(.017)=.010829
and then i used Ke=1/2m1Vi^2
since this is inelastic the potential equals the kinetic energy right?

so how start part b,d, and c?