Problem 22P

(II) A geologist finds that a Moon rock whose mass is 9.28 kg has an apparent mass of 6.18 kg when submerged in water. What is the density of the rock?

Solution 22P:

We are trying to find the density of the moon rock by submerging it completely in water.

Step 1 of 4

Concept:

Density of a body is defined as the ratio of the mass of the body to its volume. Mathematically,

…(1)

Archimedes Principle: Volume of water displaced by the body, is equal to the volume of the immersed part of the body in water.