### Two Blocks with a Spring

Two blocks, with masses $m_{1}=4.6$ kg and $m_{2}=3.8 kg$. are connected
by a light spring on a horizontal table. At a certain time, $m_{2}$
has an acceleration of $a_{2}=2.5\frac{m}{s^{2}}$.

a) What is the force on $m_{2}$ at that time?

b) What is the acceleration on $m_{1}$ at that time?