Friction may be reduced by which of the following?
A)Applying greater force
B)The use of lubrication
C)The use of rollers
D)Both B and C

Question

Quizplus · Accepted Answer

Friction can be reduced by using lubrication, which creates a slippery surface between two objects, thus reducing the friction between them. Similarly, using rollers can also reduce friction as the objects can roll smoothly over the rollers instead of sliding against each other. Applying greater force may actually increase the friction, as it increases the pressure between the two surfaces in contact, which in turn increases the friction. Therefore, the best choice is D, as both lubrication and rollers can effectively reduce friction.

Friction May Be Reduced by Which of the Following