What is the net force on a rock that weighs 500N if the weight of the water it displaces is 300N?
To determine the net force acting on the rock, we need to consider the concept of buoyancy. Buoyancy is the upward force exerted on an object submerged or partially submerged in a fluid, such as water.
The weight of the rock is given as 500N, which is its gravitational force. The weight of the water it displaces is 300N, which represents the buoyant force acting on the rock.
To calculate the net force, we subtract the buoyant force from the weight of the rock:
Net force = Weight of the rock - Weight of the water it displaces
Net force = 500N - 300N
Net force = 200N
Therefore, the net force acting on the rock is 200N.