William would like this bar magnet to move back and forth from left to right using attraction. what objects does he need to place at each end to make it move? • Place the South Pole of another magnet next to the South pole, and the North Pole of another magnet next to the north pole.

• Place the North Pole of another magnet next to the South pole, and the South Pole of another magnet next to the north pole.

• Place the South Pole of another magnet next to the South pole, and the North Pole of another magnet next to the South pole.

• Place the North Pole of another magnet next to the South Pole and the North Pole of another magnet next to the north pole.