Luke Autbeloe twirls a 750 gram mass on the end of a 0.82 meter string. Find the tension at the top and bottom of the orbit. Assume the mass's velocity at both top and bottom is 3.7 m/s.

Hey Sun -- at bottom, the string feels V*V/r plus g ... at top, V*V/r minus g ...

V*V ~ 3.5*4.0 ~ 14 m-m/s/s ... V*V/r ~ 14/0.82 ~ 16.8/0.98 ~ 17 m/s/s ...

**BOTTOM: 3/4 kg with 27 m/s/s ~ 21N ... TOP: 3/4 kg with 7 m/s/s ~ 5N**:)