Washing machine and control method thereof

A washing machine comprising:

• a cabinet;
• a tub arrangeable inside the cabinet;
• a drum rotatable inside the tub;
• a motor configured to generate power to rotate the drum;
• a ball balancer arrangeable in the drum;
• a damper, to support the tub, configured to have a damper force that is changeable;
• and
• at least one processor configured to control a rotation speed of the motor and control the damper force of the damper,
• wherein as the drum is rotated by the motor according to the rotation speed of the motor controlled by the at least one processor, the at least one processor is configured to perform balancing of the ball balancer by controlling the damper force of the damper such that a damper force in a final resonance section among a plurality of resonance sections that occur is smaller than a damper force in a previous resonance section among the plurality of resonance sections.