Two identical solid cubes of volume are placed in a tank of water
PHYSICS · Single correct · AP · Physics 1: Algebra-based · Fluids · Fluids
Problem
Two identical solid cubes of volume V are placed in a tank of water. Cube P is suspended by a string and hangs fully submerged in mid-water. Cube Q rests flat on the bottom of the tank and is completely covered by water. Which statement correctly compares the upward force exerted by water on the two cubes?
(a) The upward force on cube P equals that on cube Q
(b) The upward force on cube Q is greater than that on cube P
(c) The upward force on cube P is greater than that on cube Q
(d) No upward force acts on either cube because both are fully underwater