Three blocks of masses $4\, kg, 8\,kg$ and $24 \,kg$ are connected to each other with  light strings and placed on a smooth horizontal floor as shown in figure. If the system  moves with an acceleration of $2\, ms^{-2}$, the applied force $F$ is ............ $N$

Four blocks are connected as shown in the fig. on a horizontal frictionless surface of $m_1 = m_2 = m_3 = m_4$ then $T_3/T_4$ will be

Two bodies of masses $m_{1}=5\,kg$ and $m _{2}=3\,kg$ are connected by a light string going over a smooth light pulley on a smooth inclined plane as shown in the figure. The system is at rest. The force exerted by the inclined plane on the body of mass $m _{1}$ will be$....N$ [Take $g=10\,ms ^{-2}$ ]

Two blocks of mass $8\,kg$ and $2\,kg$ are connected by a string and they are released on  a inclined plane of inclination $30^o$ as shown in figure then what will be the tension  in string connecting the two blocks  ............ $N$

Three blocks with masses $m, 2m $ and $3 m$ are connected by strings, as shown in the figure. After an upward force $F$ is applied on block $m,$ the masses move upward at constant speed $v.$ What is the net force on the block of mass $2\ m\ ?\, (g$ is the acceleration due to gravity$)$

Two blocks $'A$' and $'B'$ each of mass $'m'$ are placed on a smooth horizontal surface. Two horizontal force $F$ and $2F$ are applied on the $2$ blocks $'A'$ and $'B'$ respectively as shown in figure. The block $A$ does not slide on block $B$. Then the normal reaction acting between the two blocks is