A wooden block measuring 40 cm $ imes10 cm imes 5$ cm has a mass 850 g. Find the density of 3 wood. (425 $kgm^{-3}$)

Question

A wooden block measuring 40 cm $ imes10 cm imes 5$ cm has a mass 850 g. Find the density of 3 wood. (425 $kgm^{-3}$)

Accepted Answer

Solution:

Volume of wooden block = V = 40 cm $ imes 10 cm imes 5cm$ = $2000 cm^{3}$
=$\frac{2000 imes1}{100}$ $ imes\frac{1}{100}$ $ imes \frac{1}{100}$ $m^{3}$
= $0.002 m^{3}$

Mass = m = 850 g =$\frac{850}{1000}$ = 0.85 kg
Density of wood = $ ho$ = ?
Density =$\frac{Mass}{Volume}$ =$\frac{0.85}{0.02}$ = $425 kg^{-3}$