This is the correct answer for how to trajectory and angle for a pendulum?

owh, its easy girl

u just need to use perpetual law of energy

in the highest point is

Ep = mgh

in the lowest point is

Ek = mv.v/2

in any position

E = mgh + mv.v/2

in the highest position the potential energy is

Ep = m . g . (delta)h

Ep = m . g . (h - h')

Ep = m . g . (h - hcos(x)) x = angle of pendulum pulled at

Epmax=Ekmax

Ep = Ek

m . g . h(1 - cos(x)) = m . v^2/2

g . h (1-cos(x)) = v^2/2

2 . g . h(1 - cos(x)) = v^2

v = sqrt [2 . g . h (1 - cos(x))]

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