Why? Because the person doesn't want to use the elevator.
There is zero net force because the velocity is constant.
The (vertical) force of the escalator step upon the person's shoes equals his or her weight, 637 N. There is no horizontal force acting.
The velocity and the slope do not matter when considering the forces acting, in this case.
A person of mass 65 kg is ascending on an escalator at a constant velocity of 2.5 m/s [22°above the horizontal]. Why The magnitude of the net force acting on the person is 0 N
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