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 $2m/s^2$ in the upward direction in both the blocks. If T and T' be the tensions in the two parts of the string, then

Q. 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 $2m/s^2$ in the upward direction in both the blocks. If T and T' be the tensions in the two parts of the string, then:

Q.

Two blocks of masses m and 2 m placed one over the other as shown in figure. The coefficient of friction between m and 2m is µ and between 2m and ground is $\frac{\mu }{3}$. If a horizontal force F is applied on upper block and T is tension developed in string then choose the incorrect alternative.

Q. Two blocks are connected by a string as shown in the figure. The upper block is hung by another string.
1) What will be the tension in the upper string due to the two blocks suspended in rest position?
2) What force F will have to be applied on the upper string to produce an acceleration.

Q. Figure shows two blocks tied by a string. A variable force $F=5t$ is applied on the block A. The coefficient of friction for the blocks A and B are $0.5$ and $0.6$ respectively. Find the tension in the string at time $t=2\text{sec}$ (in newtons)

Q. In the figure below, if all the surfaces are assumed to be smooth and the force $F=100N$. If the acceleration of block $B$ of mass $20kg$ is $a$ and tension in string connecting block $A$ of mass $20kg$ is $T$ then, just after force $F$ is applied find the values of $T$ and $a$.