Main Question or Discussion Point
I have 3 x Flywheels of equal dimensions but different weight eg a.400lbs b.800lbs c.2000lbs,which one will keep turning the longest? Or is there no difference?
Friction is directly proportional the normal force. This means it's also directly proportional to mass, so doubling the mass will double the friction.Assuming the surfaces experiencing friction were the same (same frictional coeffiecient?), how much would the actual rotational friction differ due to different masses?