You suspend a boulder weighing fifty pounds on a rope and lower itbeneath the su

Question

You suspend a boulder weighing fifty pounds on a rope and lower itbeneath the surface of the water in a lake. When the boulder isfully submerged, you find you have to support less than 50 pounds.As the boulder is submerged still further, the support force neededto hold the boulder is

A)more than just beneath thesurface.
B)the same.
C)less than just beneath the surface. Hint: The buoyancy is equal to the weight if the displacedwater. The volume of the boulder does not change when it islowered. Therefore it displaces the same amount of water,independent of position. The weight of the displaced waterstays the same and the buoyancy stays the same.

A)more than just beneath thesurface.
B)the same.
C)less than just beneath the surface. Hint: The buoyancy is equal to the weight if the displacedwater. The volume of the boulder does not change when it islowered. Therefore it displaces the same amount of water,independent of position. The weight of the displaced waterstays the same and the buoyancy stays the same.
Hint: The buoyancy is equal to the weight if the displacedwater. The volume of the boulder does not change when it islowered. Therefore it displaces the same amount of water,independent of position. The weight of the displaced waterstays the same and the buoyancy stays the same.

Explanation / Answer

You suspend a boulder weighing fifty pounds on a rope andlower it beneath the surface of the water in a lake. When theboulder is fully submerged, you find you have to support less than50 pounds.
.
As the boulder is submerged still further, the support force neededto hold the boulder is the same when the boulder is fullysubmerged. . Since . The buoyancy is equal to the weight if the displacedwater. . The volume of the boulder does not change when it islowered. Therefore it displaces the same amount of water,independent of position. . The weight of the displaced water stays the same and thebuoyancy stays the same. . Hope this helps u! The buoyancy is equal to the weight if the displacedwater. . The volume of the boulder does not change when it islowered. Therefore it displaces the same amount of water,independent of position. . The weight of the displaced water stays the same and thebuoyancy stays the same. . Hope this helps u!

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