A 400 g solid cube having an edge of length 10 cm floats in water. How much volume of the cube is outside the water? (Given: density of water = 1000 kg m-3)
- 400 cm3
- 600 cm3
- 1400 cm3
- 4000 cm3
Answer
(2) 600 cm3
Solution
Volume of cube: V = 103 = 1000 cm3
Floating: weight = buoyant force mg = w Vin g
Vin = m w = 400 g1 g cm-3 = 400 cm3
Vout = 1000 - 400 = 600 cm3
Answer: (2)