### Laws of Motion

goals
A string of length (L) and uniform cross-section is spread on a smooth plane. One of its end is pulled by a force F. Find the tension in it at a distance l from this end :
Figure shows two blocks A and B, each having a mass of 320 gram connected by a light string passing over a smooth light Pulley. The horizontal surface on which the block a can slide is smooth. The block is attached
A monkey of $25kg$ is holding a vertical rope. The rope does not break if a body of mass $30kg$ is suspended from it, but the rope  breaks if the mass of the body suspended with the rope exceeds $30kg$. What will be the maximum acceleration with which the monkey can climb up along the rope? (Take $g=10m{ s }^{ -2 }$)
Two blocks shown in figure are connected by a heavy rope of mass $4kg$. An upward force of $200N$ is applied as shown. The tension at the mid-point of the rope is ($g=10m{ s }^{ -2 }$)
A block of weight $4 kg$ is resting on a smooth horizontal plane. If it is struck by a jet of water at the rate of $2 { kgs }^{ -1 }$ and at the speed of $10 { ms }^{ -1 }$, then the initial acceleration of the block is