Question

You have probably noticed that carrying a person in a pool of water is much easier than carrying a person through air. To understand why, find the buoyant force exerted by air and by water on the person. Assume the average volume of a person is 0.092 m3, and that the person is submerged in air and water respectively. (Give the magnitude.)
air: ________
water :_______

Answer 1

Answer:

The answer is "0.91238 and 744.8"

Explanation:

In this scenario it is easier to take a person to the water-pool than to transport the people in the air, as the person's strength is increased by water upwards:

$f_b \to m \to mg =person \\\\F_B \ in\ air = v\ & air\ g$

               $=0.076 \times 1.225 \times 9.8 \\\\ =0.91238 \ N$

$F_B \ in \ water = v \& water \ g$

                    $=0.076 \times 1000 \times 9.8\\\\= 744.8 \ N$