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Ball Bearings Are Used in bicycles, cars, etc., Because

Ball bearings are used in bicycles, cars, etc., because(2013)

a) the actual between the is increased area of contact wheel and axle

b) the effective between the is increased area of contact wheel and axle

c) the effective between the is reduced area of contact wheel and axle

d) None of the above statements is correct

Answer: C

Self explanatory

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