A block of styrofoam floats on water while a same size block of lead lies submerged in the water. The buoyant force is greatest on the
A) styrofoam.
B) lead.
C) is the same for both

Question

Quizplus · Accepted Answer

The buoyant force on an object is equal to the weight of the fluid displaced by the object. Since the lead block is denser, it displaces more water when fully submerged compared to the styrofoam that floats. Therefore, the buoyant force is greater on the lead block.

A Block of Styrofoam Floats on Water While a Same