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

Question

Quizplus · Accepted Answer

The buoyant force is equal to the weight of the fluid displaced by the object. As the lead block is denser than water and fully submerged, it displaces a larger volume of water than the Styrofoam which is less dense and floats on the surface. Therefore, the buoyant force on the lead block is greater than that on the Styrofoam block.

A Block of Styrofoam Floats on Water While a Same-Size