Solving Pendulum Problem: Find h & Resultant Angle

[physicshelp98]

Homework Statement

a 2 kg pendulum of length 7 meters is moving at 1 m/s, calculate how high (h) the pendulum will rise; and the resultant angle.

Homework Equations

1/2mv2 = mgh

cos = Y/L

h = L ( 1- cos )

The Attempt at a Solution

1/2(2)(1)^2 = (2)(9.8) h
1 = 19.6h
1/19.6h
h = .051

just don't know how to go about gettign resultant angle

 

[ideasrule]

Have you tried drawing a diagram and writing out a trigonometric relationship using that diagram?

 

[physicshelp98]

yeah i did and got h= 7 tan\theta, how would you find the actual angle that what I am having difficult with.