A piece of wood of mass 150 g has a volume of 200 cm3.Find the density of wood in
(a) C.G.S.unit (b) S.I unit
(a) Mass of wood (M) = 150 g Volume of wood (V) = 200 cm3 Density (D) =? (b) In S.I. system = 0.75 × 1000 = 750 kg/ m3