Question

В бассейне плавает лодка. В ней лежит камень. Как изменится уровень воды в бассейне, если камень из лодки выбросить в бассейн? Указание: Подумайте, какой объем воды вытесняет плавающая лодка с камнем, и какой - камень на дне бассейна и лодка, плавающая без камня.

Answer 1

Если вытащить из лодки камень и бросить в воду то уровень жидкости в бассейне уменьшится
так как в первом случае
Fa=(M+m)*g
p*g*V=M*g+m*g
V1=M/p +m/p    p=1000 кг/м3
во втором случае V2=M/p+m/pк    pк>pводы
V1>V2

Answer 2

Understanding the Change in Water Level

When the stone is thrown from the boat into the pool, the water level in the pool will decrease. This is because the stone displaces its own volume of water when it is in the boat, and when it is thrown into the pool, it displaces an additional volume of water equal to its own volume.

The principle at play here is known as Archimedes' principle, which states that the upward buoyant force exerted on a body immersed in a fluid is equal to the weight of the fluid that the body displaces. When the stone is in the boat, it displaces a certain volume of water, and when it is thrown into the pool, it displaces an additional volume of water.

This change in water level can be calculated based on the volume of the stone and the boat, as well as the density of water. The exact calculation would involve determining the volume of the stone and the boat, and then calculating the difference in water volume when the stone is in the boat versus when it is in the pool.

In summary, the water level in the pool will decrease when the stone is thrown from the boat into the pool.