Two blocks are connected by a string as shown in the diagram. The upper block is hung by another string. A force $F$ applied on the upper string produces an acceleration of $2\,m/{s^2}$ in the upward direction in both the blocks. If $T$ and $T'$ be the tensions in the two parts of the string, then $T$ and $T'$
$T = 70.8N$ and $T' = 47.2N$
$T = 58.8N$ and $T' = 47.2N$
$T = 70.8N$ and $T' = 58.8N$
$T = 70.8N$ and $T' = 0$
A frictionless cart $A$ of mass $100\ kg$ carries other two frictionless carts $B$ and $C$ having masses $8\ kg$ and $4\ kg$ respectively connected by a string passing over a pulley as shown in the figure. What horizontal force $F$ must be applied on the cart so that smaller cart do not move relative to it .......... $N$
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
$Assertion$ : A man and a block rest on smooth horizontal surface. The man holds a rope which is connected to block. The man cannot move on the horizontal surface
$Reason$ : A man standing at rest on smooth horizontal surface cannot start walking due to absence of friction (The man is only in contact with floor as shown).
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 ............ $N$
A block $B$ is placed on block $A$. The mass of block $B$ is less than the mass of block $A$. Friction exists between the blocks, whereas the ground on which the block $A$ is placed is taken to be smooth. $A$ horizontal force $F$, increasing linearly with time begins to act on $B$. The acceleration ${a_A}$ and ${a_B}$ of blocks $A$ and $B$ respectively are plotted against $t$. The correctly plotted graph is