Question

2. (a) What is ball bearing? How does a ball bearing reduce friction? (b) Draw a labelled diagram of ball bearing used to reduce friction.​

Answer 1

Explanation:

???? it was available in science textbook or digest

Answer 2

Answer:

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Ball bearing is a device which consists of a ring of small metal balls. It is designed to make the moving parts of a machine to roll over each other rather than slide.

Ball bearing is a device which consists of a ring of small metal balls. It is designed to make the moving parts of a machine to roll over each other rather than slide.Bearings reduce friction by means of a rolling motionBearings reduce friction by means of this rolling motion. The "rolling bearing", with its rolling motion, reduces friction more than the "plain bearing" with its sliding motion, allowing for a greater decrease in the amount of energy consumption during rotation.