Question

3 look a the free - body diagram below and determine the net force acting upon the object.

a 5 n, east
b zero
c 6 newtons
d 3 n, south

Explanation:

Step1: Analyze vertical forces

Vertical forces: \(F_{norm} = 3N\) (up), \(F_{grav}=3N\) (down).
\(F_{vertical - net}=F_{norm}-F_{grav}=3 - 3=0N\)

Step2: Analyze horizontal forces

Horizontal forces: \(F_{frict}=5N\) (left), \(F_{app}=5N\) (right).
\(F_{horizontal - net}=F_{app}-F_{frict}=5 - 5=0N\)

Step3: Calculate total net force

\(F_{net}=\sqrt{F_{vertical - net}^2+F_{horizontal - net}^2}=\sqrt{0^2 + 0^2}=0N\)

Answer:

B. Zero