Discussion :: Physics
- Ball bearings are used in cycles, scooters etc to
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A.
Increase the friction between the wheel and the axle |
|
B.
Reduce the friction between the wheel and the axle |
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C.
Reduce the friction between ground and the whee |
|
D.
None of the above |
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Answer : Option B
Explanation :
The purpose of a ball bearing is to reduce rotational friction and support radial and axial loads. Reduce the friction as rolling friction is the least, rather than sliding or static friction.
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