The length of the whetstone is 30 cm, the width is 5 cm, the thickness is 2 cm, the weight

The length of the whetstone is 30 cm, the width is 5 cm, the thickness is 2 cm, the weight of the whetstone is 1.2 kg. Determine the density of the whetstone.

Problem data: L (the length of the whetstone taken) = 30 cm (in SI L = 0.3 m); B (bar width) = 5 cm (in SI B = 0.05 m); h (thickness) = 2 cm (in SI h = 0.02 m); m (mass of the bar) = 1.2 kg.

To determine the density of the taken whetstone, we use the formula: ρ = m / V = m / (L * B * h).

Let’s make a calculation: ρ = 1.2 / (0.3 * 0.05 * 0.02) = 4000 kg / m3.

Answer: The density of the grindstone taken is 4000 kg / m3