. In the equilibrium position, what is the net force acting on the balloon? Explain why. if the mass is 3g

In the equilibrium position, the net force acting on the balloon is zero. This is because the balloon is not accelerating and is at rest, so the forces acting on it must be balanced.

When the balloon is at rest, the force of gravity pulling it downward is balanced by the tension force in the string pulling it upward. Since the balloon is not accelerating in the vertical direction, the magnitudes of these two forces must be equal.

Therefore, the net force on the balloon is zero when the balloon is in the equilibrium position.