Question

व्हाट विल यू डू टू अवॉइड हेविंग टो ऑब्जर्व ऑपिनियन पिक्चर
observe the​

Answer 1

Answer:

Lubrication - It helps in reducing roughness, which decreases friction. 2) Ball Bearings - Since rolling friction is less than sliding friction, ball bearings help in maintaining minimal surface of contact between two surfaces in motion. 3) Polishing - Smooth surfaces or bearings work better than the rough ones.

Explanation:

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Answer 2

Answer:

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Explanation:

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