A small cubic block of copper (Cu) is carefully dropped into a beaker half full of mercury (Hg):
(a) Calculate the resulting equilibrium forces on the block (it is not bobbing or not moving)
(b) Prove if the copper block will float or descend to the bottom
(c) What is the fractional volume of the copper block exposed (if it does float)?
This solution is provided in 111 words in an attached .doc file. It calculates the fractional volume and uses a diagram to further understanding of the problem.