Question:
Two blocks of equal mass $m$ are tied to each other through a light string. One of the blocks is pulled along the line joining them with a constant force F. Find the tension in the string joining the blocks.
Solution:
$\mathrm{F}-\mathrm{T}=\mathrm{ma}$
$\mathrm{F}=2 \mathrm{~T}$
$T=\frac{F}{2}$