What is the weight of a 40 cm steel cube lying on the floor?

1) Find the volume of the steel cube: V = a ^ 3, where a is the side of this cube.
Therefore: V = (0.4m) ^ 3 = 0.064m ^ 3
2) We can calculate the mass of a cube by the formula: m = pV, where p is the density of the substance that makes up the cube (p = 7900 kg \ m ^ 3), and V is the volume of the cube.
Hence: m = 7900 * 0.064 = 505.6 kg.
3) Since we need to find the weight (the force with which the body presses on the support), we calculate it by the formula P = mg, where m is the body’s mass, and g is the acceleration of gravity.
Thus: P = 505.6 * 10 = 5056 N (Newtons)