posted by Anonymous .
A shot-putter puts a shot (weight = 71.3 N) that leaves his hand at distance of 1.62 m above the ground.
(a) Find the work done by the gravitation force when the shot has risen to a height of 2.08 m above the ground. Include the correct sign for work.
(b) Determine the change (ÄPE = PEf - PE0) in the gravitational potential energy of the shot.