Question

Write the derived unit of force.

Answer 1

The derived unit of force is newton(N).

Force is given by

$\mathrm{F}=\mathrm{mass}\mathrm{x}\mathrm{acceleration}=\mathrm{mass}\mathrm{x}\mathrm{velocity}/\mathrm{time}=\mathrm{mass}\mathrm{x}\mathrm{displacement}/{\mathrm{time}}^2$

SI unit of mass is $\mathrm{kilogram}\left(\mathrm{kg}\right)$; SI unit of displacement is $\mathrm{metre}\left(\mathrm{m}\right)$; SI unit of time is $\mathrm{second}\left(\mathrm{s}\right)$

Therefore SI unit of force is kgm/s², known as newton(N).