A washing machine has a water tank and a motor for rotationally driving a load received in the water tank and performs a washing operation including a washing process, a rinsing process, and dewatering process. The motor has a stator and a rotor. The stator has a stator coil, and the rotor has a rotor magnet including a first magnet and a second magnet. The first magnet has a permanent magnet having a high coercive force, and the second magnet has a permanent magnet having a lower coercive force than the first magnet and generating easily changeable magnetic flux. In the washing process of the washing operation, the second magnet is magnetized so that the magnetic flux of the rotor magnet acting on the stator increases, and in the dewatering process, the second magnet is magnetized so that the magnetic flux acting on the stator decreases from the level in the washing process.