How much do two springs stretch in series compared to two springs in parallel?

When two springs are arranged in series, the total stretch is greater than that of the individual springs due to the cumulative effect of each spring's extension. The effective spring constant for springs in series is lower than that of the individual springs, resulting in a greater total stretch for a given force. In contrast, when springs are arranged in parallel, they share the load, leading to a smaller overall stretch since the effective spring constant is increased. Therefore, springs in series stretch more than those in parallel for the same applied force.