Final answer:
When two identical springs are attached to each other, their combined spring constant is two times the individual spring constant.
Step-by-step explanation:
When two identical springs are attached to each other, their combined spring constant is two times the individual spring constant.
To see this, let's consider two springs with spring constants k1 and k2. When they are attached in series (end-to-end), the effective spring constant is given by:
1/keff = 1/k1 + 1/k2
If the two springs are identical (k1 = k2 = k), the equation becomes:
1/keff = 1/k + 1/k = 2/k
Therefore, the spring constant of two attached identical springs is 2k.