Answer:
490 N
Explanation:
The elevator is rising at constant velocity: this means the acceleration of the system is zero, so according to Newton's second law, the net force on the system is also zero:
[tex]F_{net} = ma =0[/tex]
There are two forces acting on the person standing on the scale:
- its weight, downward, whose magnitude is W=490 N
- The normal force of the scale on the person, N, which is upward
Since the net force must be zero, we have:
[tex]W-N=0[/tex]
From which we find the normal force:
[tex]N=W=490 N[/tex]
