Find the frequency of vibration of a ball of mass m = 3kg on a spring of modulus (i) k1 = 27 nt/m, (ii) k2 = 75 nt/m, (iii) on these springs in

Find the frequency of vibration of a ball of mass m = 3kg on a spring

of modulus (i) k1 = 27 nt/m, (ii) k2 = 75 nt/m, (iii) on these

springs in parallel (iv) in series, that is the ball hangs on 1 spring

which, in turn, hangs on the other spring.