touching a rotor chops your hand off. Getting hit in the head by delivery of dog food kills you. It's kinetic vs potential energy. for your kinetic energy equat

touching a rotor chops your hand off. Getting hit in the head by delivery of dog food kills you. It's kinetic vs potential energy. for your kinetic energy equation you need a lot of speed and a lot of mass. You can have one of those, but not both.