A small boat weighs 1000N. it is floating in water.
what is the upthrust on the boat?
what weight of the water displaced by the boat?
If extra weight is put into the boat, why will the boat float lower in the water?
The upthrust on the boat is equal to the weight of the water it displaces, which is known as Archimedes' principle. Therefore, the upthrust on the boat is 1000N.
The weight of the water displaced by the boat is also 1000N. This is because the upthrust on an object in a fluid is equal to the weight of the fluid displaced by the object.
If extra weight is put into the boat, the total weight of the boat will increase. As a result, the upthrust on the boat will remain constant, but it will be less than the increased weight of the boat. Therefore, the boat will sink lower in the water because the increased weight will outweigh the upthrust.