## Questions 11-12
A sphere of mass m1, which is attached to a spring, is displaced downward from its equilibrium position as shown above left and released from rest. A sphere of mass m2, which is suspended from a string of length L , is displaced to the right as shown above right and released from rest so that it swings as a simple pendulum with small amplitude. Assume that both spheres undergo simple harmonic motion
12. If both spheres have the same period of oscillation, which of the following is an expression for the spring constant
(A) L/m1g
(B) g/m2L
(C) m2g/L
(D) m1g/L