Two identical blocks each of mass \( M=9 \mathrm{~kg} \) are placed on a rough horizontal surfac....

Two identical blocks each of mass \( M=9 \mathrm{~kg} \) are placed on a rough horizontal surface of frictional coefficient \( \mu=0.1 \). The two blocks are joined by a light spring a block B is in contact with a vertical
\( \mathrm{P} \)
fixed wall as shown in figure. A bullet of mass \( m=1 \mathrm{~kg} \) and \( v_{0}=10 \mathrm{~m} / \mathrm{s} \) hits block \( \mathrm{A} \) and gets embedded in it. Find the maximum compression of spring. (Spring constant \( =240 \mathrm{~N} / \mathrm{m}, g=10 \mathrm{~m} / \mathrm{s}^{2} \) )