Question

1. what is the net force on the object represented by the free - body diagram below. fgrav = 20 n fnorm = 20 n

Explanation:

Step1: Define net - force formula

The net force $F_{net}$ in one - dimension is the sum of all forces acting on an object. Here, the two forces are $F_{grav}=- 20N$ (negative because it acts to the left) and $F_{norm}=20N$ (positive because it acts to the right).
$F_{net}=F_{grav}+F_{norm}$

Step2: Substitute values

Substitute $F_{grav}=-20N$ and $F_{norm}=20N$ into the formula.
$F_{net}=-20 + 20$
$F_{net}=0N$

Answer:

0 N