The idea of this machine seems to be the following: Engine is used to turn a wheel with hanging weights attachted, so that the weight is on the top of the wheel. The engine turns off. Gravity pulls the weight down. This pull is used to generate electricity with a dynamo. This electriticy is used to turn the wheel etc. Here is WHY it doesn't work, aside from the fact that it doesnt:
m*g*h = W
W is the energy gained from lifting, or moving something for a certain distance (h) against gravity (g). This formula can be used to calculate the energy needed to pull the weight up. It also discribes the amout of energy, set free by letting it fall down again. So all is solid, right? AS much energy is consumed, as produced, but the thing still moves.
NO! Not all energy from the "fall" is turned into movement. A lot of it is used to move air around, to warm the parts of the machine, to bend parts of it for very small amounts. You loose energy. May be not in a detectable amount, during a small amout of time, but definatelty during an infinte amount of time.
You know these desk playthings with the balls on cords, that keep bumping? They don't move forever. But if you look them for one second, they mihgt look like they did.