Which of the following is not used to reduce friction : *
Using oil between contact surfaces
Using grease between contact surfaces
Using ball bearing
Making scratches on the contact surfaces
Using oil between contact surfaces
Using grease between contact surfaces
Using ball bearing
Making scratches on the contact surfaces
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Answer:
making scratches on contact surface
Explanation:because scratches creates rough surface which in turn increases friction
Answer:
making scratches on the contact surfaces
Explanation:
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