WAEC Physics 2014 Theory — Question 11

Model answer

Using the displacement (measuring cylinder) method: 1. Find the mass (m) of the solid using a beam balance. 2. Partly fill a measuring cylinder with water and record the initial volume reading (V₁). 3. Gently lower the solid into the water (tied with a thread if necessary) and record the new volume reading (V₂). 4. Volume of the solid = V₂ − V₁. 5. Density = mass/volume = m/(V₂−V₁).