A boat with an anchor on board floats in a swimming pool that is somewhat wider than the boat. Does the pool water level move up, move down, or remain the same if the anchor is (a) dropped into the water or (b) thrown onto the surrounding ground? (c) Does the water level in the pool move upward, move downward, or remain the same if instead; a cork is dropped from the boat into the water, where it floats?

Conditions for the total weight of the boat are given.

The water level increases according to the weight of the object submerged in it. Thus, using the given data and situations, we can get the weight of the object.

Formula:

The weight on a body due to gravitational acceleration, W = mg (i)

a)

If the anchor is dropped down into the water, the weightof the boatreduces due to decrease in the weight of the boat considering equation (i). So, it displaces less water than before.

Hence, the level of water moves downward.

b)

If the anchor is thrown onto the surrounding ground, the level of water moves downward because the boat will displace less water than before.

Hence, the level of water moves downward.

c)

When cork is droppedfrom a boatinto the water, then there would be no effect on the weight of the boat. So, it displaces the same volume of water as before.

Hence, there would be no effect on the level of water.