Question

What is an advantage of using rollers instead of sliding an object?

• A. Rolling friction is much less than sliding friction.
• B. Rollers decrease the weight of the object to be moved.
• C. Rolling friction has the advantage of being greater than sliding friction.
• D. Rollers are less expensive

Answer 1

The correct option is A

Rolling friction is much less than sliding friction.

The advantage of using rollers instead of sliding an object is that rolling friction is much less than sliding friction. Thus, rolling reduces friction.