Answers

2014-02-24T16:42:18+01:00
The methods of reducing frictions are;      using a lubricant like grease,,,,,,,materials that is low in resistance in moving parts,,,,,,,using graphite,,,,using talc,,,,,using carbon coating
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2014-02-24T20:16:08+01:00
Using of lubricants like grease,oil,graphite etc
using ball bearing
steam lining the oblect
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