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Science and Technology › PhysicsXGeneral

Science and Technology › PhysicsXGeneral

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Ball bearings are used in bicycles, cars, etc., because

Options

(a)

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

(b)

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

(c)

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

(d)

None of the above statements is correct

Answer

(C)