If the weight of an object is greater than the buoyant force acting on it, it will sink. What is the weight of a block of iron with the dimensions of 3.00 cm x 3.00 cm x 3.00 cm? The iron has a mass of 213 g. Hint: Convert mass to weight using Weight = mg, where mass is in kilograms and gravity, g = 9.80 m/s2. 213 g 0.213 kg 2.09 N 2,090 N