Question

choose the correct answer. when net force is equal to zero, a change in motion will not occur what amount of force should be added to the right side of the box if we do not want it to move? more or less than 30 n 30 n

Explanation:

Step1: Recall Net Force Concept

For an object to not move (remain in equilibrium), the net force acting on it must be zero. Net force is the vector sum of all forces. Here, forces are horizontal (left and right). Let the force to the left be \( F_{left} \) and to the right be \( F_{right} \). The net force \( F_{net}=F_{right}-F_{left} \) (assuming right is positive). We want \( F_{net} = 0 \).

Step2: Apply Equilibrium Condition

Given \( F_{left}=30\ N \) (force to the left). We need \( F_{net}=F_{right}-30 = 0 \). Solving for \( F_{right} \), we get \( F_{right}=30\ N \). So the force added to the right side should be 30 N.

Answer:

30 N