If the force and the motion are along the same direction (like it is here) then work is force*distance. The time doesn't come into play until you want the power used. So here
W=9.0*3.0=27J
Wrap around a metal with wire instead of using wire alone.
Answer:
The dynamo produces Alternating Current output, so in theory yes, it should work in reverse if Alternating Current is input.
