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 $T'$ are the tensions in the two parts of the string,then $T$ and $T'$ are:
- A$T = 70.8\,N$ and $T' = 47.2\,N$
- B$T = 58.8\,N$ and $T' = 47.2\,N$
- C$T = 70.8\,N$ and $T' = 58.8\,N$
- D$T = 70.8\,N$ and $T' = 0$
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