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 is- 

Two masses $m_1 = 5\, kg$ and $m_2 = 4.8\, kg$ tied to a string are hanging over a light  frictionless pulley. ............ $m/s^2$ is the acceleration of the masses when they  are free to move . $(g = 9.8\, m/s^2)$

Cream gets separated out of milk when it is churned, it is due to

When $F =2 N$, the frictional force between 5 $kg$ block and ground is $..........\,N$

If a pushing force making an angle $\alpha$ with horizontal is applied on a block of mass $m$ placed on horizontal table and angle of friction is $\beta$, then minimum magnitude of force required to move the block is

Two blocks, each having mass $M$ rest on frictionless surfaces as shown in the figure. If the pulleys are light and frictionless, and $M$ on the incline is allowed to move down, then the tension in the string will be