A ball of mass m=7kg attached to a massless string of length R=3 is released from the horizontal . Assume g=10m/s2 throughout the problem.
a. Using thee Work-Kinetic Energy Theorem, find the magnitude of the velocity of the ball when it is at its lowest point (IE the string is vertical).
b. Find the tension of the string at that point.
Work-Kinetic Energy Theorem: Worknet=KEf-KEi
KE= 1/2 m v2
The Attempt at a Solution
I'm not exactly ure how to begin. I think that KEi=0 but that's about it.