(a)[1]
Explain why the cylinder remains in equilibrium when it is immersed in the oil, referring to the forces acting on it.
(b)[3]
Calculate the density of the oil.
Physics 9702 · AS & A Level · Density and pressure
Density and pressure — practice question
A spring balance is used to find the weight of a cylinder while it is fully immersed in oil, as illustrated in Fig. 4.1. The spring balance reads $4.8\,\text{N}$. The cylinder has a length of $5.0\,\text{cm}$ and a cross-sectional area of $13\,\text{cm}^2$. The weight of the cylinder is $5.3\,\text{N}$.