A 270-kg load is lifted 21.0 m vertically with an acceleration a=0.150 g by a single cable.
A)Determine the tension in the cable.
B)Determine the net work done on the load.
C)Determine the work done by gravity on the load.
D)Determine the final speed of the load assuming it started from rest.
The Attempt at a Solution
i was able to get both A and B, for A my answer was....
and for B the answer i got was
for C and D I dont fully understand how to solve, any ideas? please help