Question

If an elivator moving vertically up with an acceleration g the force exerted on the floor by a passenger mass m is

Answer 1

The force exerted on the floor by the person is equal and opposite the force exerted on the person by the floor (Newton's 3rd law). ... When the elevator starts, in addition to that M*g force the person would exert another M*gbecause of the elevator's acceleration oriented upwards. Both M*g forces point downwards.