Physics - NLM Question with Solution | TestHub

A lift is moving with acceleration $3\mathrm{m}/{\sec }^2$. Three masses are put as shown in figure. Find the normal contact force exerted by floor of lift on mass ${\mathrm{m}}_1$.

( ${\mathrm{m}}_1=5\mathrm{kg},{\mathrm{m}}_2=3\mathrm{kg}$ and ${\mathrm{m}}_3=1\mathrm{kg}$ )