Sliding friction is another name for ______ friction.
Ball bearing is a device which usually converts: (a) rolling friction into sliding friction (b) static friction into sliding friction (c) sliding friction into rolling friction (d) rolling friction into static friction
(a) What is the difference between static and sliding friction? For a given pair of objects, which of the two is greater? (b) How can a very heavy machine be moved conveniently from one place to another in a factory? (No crane is available for this purpose).