Two springs of stiffness k1 and k2 respectively are connected in series, what will be the stiffness of the composite spring?

\(k = \frac{{{k_1} + {k_2}}}{{{k_1}{k_2}}}\)

\(k = \frac{{{k_1}{k_2}}}{{{k_1} + {k_2}}}\)

Two springs of stiffness k1 and k2 respectively are connected in ser

1.	Two springs of stiffness k1 and k2 respectively are connected in series, what will be the stiffness of the composite spring?
A.	\(k = \frac{{{k_1}{k_2}}}{{{k_1} + {k_2}}}\)
B.	\(k = \frac{{{k_1} + {k_2}}}{{{k_1}{k_2}}}\)
C.	k = k1 + k2
D.	k = k1k2
Answer» B. \(k = \frac{{{k_1} + {k_2}}}{{{k_1}{k_2}}}\)