Physics - NLM Question with Solution | TestHub

In the shown diagram, all strings and pulleys are light and surfaces are smooth. $m_A=1\mathrm{Kg},m_B=2\mathrm{Kg}$ and block A moves rightwards at $10\mathrm{m}/{\mathrm{s}}^2$ w.r.t. ground. The normal force by ground is given by ${\mathrm{N}}_{\mathrm{G}}=\lambda \times 10$ Newton. Find the value of $\lambda$.