JEE Mains Model Paper 10

A cubical block of wood of edge 3 cm floats in water. The lower surface of thecube just touches the free end of a vertical spring fixed at the bottom of thepot. The maximum weight that can be put on the block without wetting it is(density of wood = 800 kg/m3 and spring constant of the spring = 50 N/m.Take g = 10 m/s2)