The Earth's gravitational force acts towards the center of the Earth.
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If the gravitational force is less than the buoyant force, the drag force will act in the opposite direction of the gravitational force.
The main forces that act on objects in motion are gravitational force, frictional force, and air resistance. Gravitational force pulls objects towards the center of the Earth, while frictional force resists the motion of objects against surfaces, and air resistance opposes the motion of objects moving through the air.
The spring force acts in the opposite direction of the displacement from the equilibrium position.
When two forces act in the same direction, they will combine to produce a resulting force equal to the sum of the individual forces. This combined force will act in the same direction as the individual forces.
force of attraction exerted by the earth