How to solve this question of sound?

Question: A block with mass of m = 1.22 kg is attached to springs with spring constants of k1 = 17.4 N/m and k2 = 26.6 N/m, in different congurations shown in the gures below. Assume in all of these cases that friction is negligible. Part 1) In this situation the mass is connected between the two springs which are each connected to opposite walls (Figure 1). If the mass is displaced x = 10.5 cm to the right of its equilibrium position, what is the net force acting on the mass? Take to the right as positive. Figure 1: A mass, m, connected to opposite walls via two springs on opposite sides with spring constants of k1 and kg. The positive direction of displacement is to the right of the mass, is. in the direction of the second spring. Part 2) What is the period of the oscillations when the mass is released? ' Part 3) The two springs are now both on the same side of m and both connect m to a single wall (Figure 2). What is the period of these oscillations? k2 m Figure 2: A mass, m, connected on its left-hand side to a single wall via two springs on the same side with spring constants of k1 and k2