Q: Why don’t we feel the centrifugal force of Earth’s orbit? It should make us feel lighter at night, when we’re lying on the outside of the swing, and heavier during day, when we’re standing on the inside. After all, when you’re at the fair and you ride the famous Rotor (or its inferior successors, the Round Up and Gravitron), this force is strong enough to pin you against the wall.
So again I ask: Why can’t we notice any wall-smooshing force from our orbit?
A: For the average (70Kg) person, that centrifugal force is equivalent to approximately 0.000000000000000024 times Earth's gravitational pull at sea level. Converted to understandable units, for a 70Kg person the force would be 30 millionths of the weight of a head hair.