A 12 N force and a 21 N force are acting from a single point in opposite directions. What additional force must be added to produce equilibrium?

We need to add 9 N in the direction of F(1)

Explanation:

We know that in equilibrium the total force is equal to zero, so we have:

F(1) is 12 N

F(2) is 21 N in the opposite direction

F(3) is the additional force.

Then, using these values into the total force equation we have:

Therefore, we need to add 9 N in the direction of F(1)

I hope it helps you!

hi there if you are asking for conformation that wavelingth is the correct answer is wrong it is the answer is frequency. : )

i hope this you out, have a wonderful day