Volume of the beam = length x cross-sectional area
Volume = 8m x (24cm x 15cm)
Volume = 8m x 0.24m x 0.15m
Volume = 0.288m³
Mass of the beam = Volume x density
Mass = 0.288m³ x 700kg/m³
Mass = 201.6kg
Therefore, the mass of the beam is 201.6kg.
A wooden beam has a rectangular cross face 24cm by 15cm, and is 8m long. Calculate the volume of the beam if the wood has a mass of 700kg per m³, find the mass of the beam
1 answer