일반물리학 1 — Fluids: Problem 62

62 A wood block (mass 3.67 kg, density $600 \text{ kg/m}^3$) is fitted with lead (density $1.14 \times 10^4 \text{ kg/m}^3$) so that it floats in water with 0.700 of its volume submerged. Find the lead mass if the lead is fitted to the block’s (a) top and (b) bottom.