200 N
The net force on the rock is 200 N, calculated as the weight of the rock (500 N) minus the weight of the water it displaces (300 N). This net force is responsible for the upward buoyant force acting on the rock.
a weight equal to the upthrust of the water
The object will sink because its weight is greater than the weight of the water it displaces. According to Archimedes' principle, the buoyant force acting on an object is equal to the weight of the fluid displaced, so if the object weighs more than the water it displaces, it will not be able to float.
The weight of the water displaced by the toy boat is equal to the weight of the boat itself, which is 12 newtons. This is known as Archimedes' principle, which states that the buoyant force acting on a submerged object is equal to the weight of the fluid it displaces.
Whatever the actual weight of the balloon is, if you just set it on the water, then it displaces an amount of water whose weight is equal to the balloon's weight, and then it sits there and stops displacing. Just like any other floating object. If you force the balloon completely underwater by 'helping' it with added force, then it displaces 1 liter of water, which weighs 9.8 newtons (2.205 pounds).
If the weight of an object is greater than the weight of the water it displaces, the object will sink. This is because the buoyant force exerted by the water on the object is not enough to counteract the object's weight, resulting in it sinking in the water.
200 N
Any object surrounded by a fluid is buoyed up by a force equal to the weight of the fluid it displaces. There's an upward force on a cork in water that's equal to the weight of the water it displaces. There's an upward force on a helium balloon that's equal to the weight of the air it displaces. It so happens that a balloon full of helium weighs less than the air it displaces, so the upward force on it is greater than its weight.
I assume you mean "What happens if the weight of an object is greater than the weight of the water it displaces." If so, the answer is simple, it sinks. If an objects weighs less than the weight of the water it displaces, it floats.
Whatever the actual weight of the balloon is, if you just set it on the water, then it displaces an amount of water whose weight is equal to the balloon's weight, and then it sits there and stops displacing. Just like any other floating object. If you force the balloon completely underwater by 'helping' it with added force, then it displaces 1 liter of water, which weighs 9.8 newtons (2.205 pounds).
According to Archimedes principle...An object immersed in water experiences a force equal to the weight of the volume of liquid displaced by it. Here the weight of liquid displaced is 15n. So, the upward buoyant force experienced by that object is 15n.
The apparent weight of the submarine is calculated by subtracting the weight of the water it displaces from its actual weight. In this case, the apparent weight of the submarine would be 1256N - 1562N = -306N. This negative value indicates that the submarine will feel lighter when submerged in water due to the buoyant force acting on it.
if its floating, its zero : weight or force = upthrust from water note: upthrust from water = weight of water displaced
The weight of the water displaced by the toy boat is equal to the weight of the boat itself, which is 12 newtons. This is known as Archimedes' principle, which states that the buoyant force acting on a submerged object is equal to the weight of the fluid it displaces.
The buoyant force on an object is equal to the weight of the water it displaces. This is called Archimedes' principle, which states that "The buoyant force on an object is equal to the weight of the fluid displaced by the object."
Because any object in water is buoyed up by a force equal to the weight of the water it displaces (pushes aside).
Archimedes' principle states that an object partially or fully submerged in a fluid experiences a buoyant force equal to the weight of the fluid it displaces. This principle can be used to calculate the buoyant force acting on an object in a fluid and determine if the object will float or sink.
Archimedes principle states that any immersed body in a fluid will experience a buoyant force which is equal to the weight of fluid displaced by it and always acts upwards through the centroid of displaced volume. Note that if the object weight less than the wieght of water it displaces, it will float. If it is heavier than the weight of water it displaces, it will sink but its apparent weight in water will be its in-air weight minus the weight of the water it displaces.