A container is full of glycerin. The total mass of the container of glycerin is 6.4 kg6.4\text{ kg}6.4 kg and the gravitational field strength is 10 N/kg10\text{ N/kg}10 N/kg.
Calculate the total weight of the container of glycerin.
The container of glycerin is hung from a spring of unstretched length 15 cm15\text{ cm}15 cm. The limit of proportionality of the spring is not exceeded and its length increases to 31 cm31\text{ cm}31 cm.
(i) State what is meant by the limit of proportionality.
(ii) The glycerin is poured into a measuring tank. The empty container stretches the spring to a length of 19 cm19\text{ cm}19 cm.
Calculate:
(iii) The volume of the glycerin in the measuring tank is 0.004 m30.004\text{ m}^30.004 m3. Calculate the density of the glycerin.
Explain, in terms of their molecules, why the density of the glycerin is greater than that of oxygen gas.
245 exam-style questions on CIE IGCSE Physics 1.5 Forces, covering 1.5.1a Forces, resultant force and motion, 1.5.1b Load–extension graphs and the spring constant, 1.5.1c Friction and drag, 1.5.1d Force, mass and acceleration, 1.5.1e Motion in a circular path, 1.5.2a Moment of a force, 1.5.2b Principle of moments and equilibrium, and 1.5.3 Centre of gravity and stability. Each one has a worked solution and a mark scheme showing where the marks go.