Answer to Question #97356 in Physics for Hristo

Question #97356

A student pulls a 10 N block along a rough horizontal surface. The horizontal and the vertical components of the force that he applies are 4 N and 3 N, respectively.
What is the normal force?

Expert's answer

There is the equilibrium in the vertical direction:

N+F_y-W=0

The normal force:

N=W-F_y=10-3=7 \ N

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