Two particles of masses m, and m are connected by a massless thread of length L as shown in figure below. oscillations is The particle of mass m on the plane undergoes a circular motion with radius r and angular momentum L. When a small radial displacement (whew E < < r ) is applied, its radial coordinate is found to found to oscillate about The frequency of the (a) (c) 7m8 m m + 10 2 10 3m2g m m + 10 2 m (b) (d) 7mg /(m + m) ro 3mg V(m + m) ro