Fn-mgcosx=-mv^2/R
gravitational potential is zero at the top then potential energy at the time shown is
u = -mgR(1-cosx)
he starts at rest conservation of energy gives
0 = .5mv^2-mgR(1-cosx)
substitute above equation into one for second law to obtain
gcosx = 2g(1-cosx)
cosx = 2/3
h =...
I'm just having some trouble with this problem. Any help would really be appreciated. I'm not even sure where to start.
A spring (not ideal) supplies a force given by F = zx^2, where x is measured from the equilibrium position and z is a constant. A mass m is attached to the spring and then...