Well you might know that perpetual machines violate the laws of physics but do they really. Well firstly Newton's first law of motion states that an object in motion stays in motion unless acted upon an outside unequal force. Most the time when we roll a ball or something it's usually stooped by the familiar force of friction and air resistance but it'll keep going if they weren't present. So what happens if we can take them away. Well air resistance is simple to take away all we have to do is take away the air (vacuum). But how do we take away friction? You probably can't fully avoid it but even 75 percent is good. Also, another force that's always present is gravity. Can we use gravity to create electricity? Maybe magnetic force? Recently i did an experiment with the conservation of momentum. What i did was, i took marbles hit one with the other and carefully measured the force i put in and the force that came out. Well, it should be the same but it loss some momentum in the collision and friction. Then i did the same thing except with magnetic balls and the force that came out was much larger that i put in. So, doesn't that violate the laws of physics or not? Wouldn't this make perpetual machines that produce more electricity then they use possible? Help!