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Question

Sam was riding an old bicycle when he felt that the cycle was tough to pedal. He oiled the chains and lubricated the bearings for making the cycle better to use. Which force did he try to minimise by taking these steps?


A
Gravitational force
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B
Frictional force
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C
Electrostatic force
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D
Magnetic force
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Solution

The correct option is C Frictional force
Oiling and lubricating parts of bicycle helps to reduce the frictional force that causes the jam within the moving parts in the bicycle. The oil makes the surface of gears smoothened out and hence interacting with the gear becomes easier.

Physics

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