How can sliding friction be changed into rolling friction easily ?
Answer
Sliding friction can be changed into rolling friction easily by providing wheels or ball bearings to the objects to reduce friction and facilitate easy movement.
A child tries to slide a wooden block on the top of a table, but she is unable to get a smooth movement. What material do you suggest she should use in between the block and the table to get a smooth movement ?
Answer
Can use pencils as rollers under the wooden block.