Question

give two examples of cases where rolling friction is used to make work easier.

Answer 1

Shape of wheel

The type of surface on which the wheel is rolling

Any movement of the surface or below the surface

Original speed of the wheel

Diameter of the wheel

Amount of pressure on the wheel

Adhesion of the surface

Any amount of sliding that occurs in addition to the rolling motion

Deformation of object or of surface

Over inflation of tires

Micro-sliding

Thickness of tread on tires

Shape of tread on tires

Material that wheel or ball is made of

Answer 2

Answer:

Any ball or wheel has rolling friction when rolled on a surface.

Explanation:

Some examples of items that have rolling friction are:

Truck tires

Ball bearings

Bike wheels

Soccer ball, basketball, or baseball

Car tires

Skateboard tires

Railroad steel wheels

Bowling ball