A body of mass $1\, kg$ lies on smooth inclined plane. The body is given force $F = 10N$  horizontally as shown. The magnitude of net normal reaction on the body is 

A block of mass $m$ as shown in figure is pulled by a force $40 \,N$. The tension at the middle of the block is ........... $N$

Figure shows two blocks connected by a light inextensible string as shown in figure. A force of $10 \,N$ is applied on the bigger block at $60^{\circ}$ with horizontal, then the tension in the string connecting the two masses is ....... $N$

A perfect smooth sphere $A$ of mass $2\  kg$ is in contact with a rectangular block $B$ of mass $4\  kg$ and vertical wall as shown in the figure. All surfaces are smooth. Find normal reaction by vertical wall on sphere $A$  .......... $N$

Two wooden blocks are moving on a smooth horizontal surface such that the block of mass $m$ remains stationary with respect to block of mass $M$ as shown in the figure. The magnitude of force $P$ is 

A block of mass $M$ is pulled along a horizontal frictionless surface by a rope of mass $m$. If a force $P$ is applied at the free end of the rope, the force exerted by the rope on the block will be