- How do levers create energy if the conservation of energy does not allow energy to be created?
- Since gravity is unlimited, can we use it as an infinite energy source?
- Why is gravity not a real force?
- Why is gravity the strongest force?
- Why is the centrifugal force talked about so much if it's not real?
- Why will a delivery truck filled with birds sitting on its floor be heavier than a truck with the same birds flying around inside.