Question

a 10 n and 5 n force push on a box and a 15 n force pushes on the box from the opposite side. the box does not move.
what can we say about the forces?
they are balanced.
they are not in equilibrium.
they are unbalanced.

Explanation:

Step1: Calculate total left force

Sum of forces to the left: $10\,\text{N} + 5\,\text{N} = 15\,\text{N}$

Step2: Compare with right force

Right force is $15\,\text{N}$. Total left = total right.

Step3: Relate to motion state

Balanced forces mean no movement (given box doesn't move).

Answer:

They are balanced.