visit a nearby factory, workshop orany auto parts repairing sho. find out which methods are used there to reduce friction in the moving machinery or auto parts prepare report based on your findings.
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Sir , please try to do activity by yourself .
by the way coming to answer , to reduce friction , ball bearings are used or lubricant are used .
A ball bearing is a type of rolling-element bearing that uses balls to maintain the separation between the bearing races. The purpose of a ball bearing is to reduce rotational friction and support radial and axial loads.
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