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

A point mass $m$ is suspended from a light thread of length $l,$ fixed at $O,$ is whirled in a horizontal circle at constant speed as shown. From your point of view, stationary with respect to the mass, the forces on the mass are

Two masses of $1\, kg$ and $5\, kg$ are attached to the ends of a massless string passing over a pulley of negligible weight. The pulley itself is attached to a light spring balance as shown in figure. The masses start moving during this interval; the reading of spring balance will be

Two masses of $5\, kg$ and $10\, kg$ are connected to a pulley as shown. What will be the acceleration if the pulley is set free ($g =$ acceleration due to gravity)

Two masses $A$ and $B$ of $10\,kg$ and $5\,kg$ respectively are connected with a string passing over a fricionless pulley fixed at the corner of a table as show $n$ in figure. The coefficient of friction of $A$ with the table is $0.2$ . The minimum mass of $C$ that may be placed on $A$ to prevent if from moving is equal to $...........\,kg$

A stunt man jumps his car over a crater as shown (neglect air resistance)