ocr: REDUCING FRICTION In many situations, friction can be a major problem, making machines waste a lot ofe energy just to keep moving. Friction can be reduced by separating surfaces with oil or with a collection of ball bearings. WITHOUT BEARINGS WITH BEARINGS AXLE WHEEL AXLE HUB BALL BEARING Without ball bearings, the axle The ball bearings reduce friction and the wheel hub rub together, SO that the wheel can spin freely thereby wasting a lot of energy. and quickly around the axle.
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