Question

A body of mass m=(17.98+-0.6)kg has a volume v=(2.87+-0.3)m2

Answer 1

m = 2.00 gm      Δm = 0.01 gm

V = 5.0 cm³        ΔV = 0.1 cm³

d = m/V = 2/5 = 0.40  gm/cm³

density = d = m/V

  =>   Δd / d = Δm / m +  ΔV/ V

                   = 0.01/2  +  0.1/5 

                   = 0.025

Δd = 0.025 * 0.4 = 0.01  gm/cm³

d = 0.40  +-  0.01 gm/cm³