Question

calculating net force
what is the net force acting on the box?
$f_n = 100\\ n$
$f_f = 10\\ n$
$f_p = 75\\ n$
$f_g = 100\\ n$
285 n
185 n
85 n
65 n

Explanation:

Step1: Analyze vertical forces

The normal force $F_N = 100$ N and the gravitational force $F_g=100$ N. The net - force in the vertical direction $F_{net - y}=F_N - F_g=100 - 100=0$ N.

Step2: Analyze horizontal forces

The pushing force $F_p = 75$ N and the frictional force $F_f = 10$ N. The net - force in the horizontal direction $F_{net - x}=F_p - F_f=75 - 10 = 65$ N.

Step3: Calculate the net force

Since the net - force in the vertical direction is 0 N, the net force acting on the box is equal to the net - force in the horizontal direction. So, $F_{net}=F_{net - x}=65$ N.

Answer:

65 N