# Rolling Friction Calculator, Formula, RF Calculation

## Rolling Friction Calculator:

Enter the values of rolling resistance, Crr and normal force, N(N) to determine the value of rolling friction, Froll(N).

 Enter Rolling Resistence Coefficient: rr Enter Normal Force: N Result – Rolling Friction: N

## Rolling Friction Formula:

Rolling Friction occurs when a wheel, ball, or cylinder rolls over a surface, as opposed to sliding friction.

It is the force resisting the motion when a body rolls on a surface, mainly due to deformations caused at the contact area between the body and the surface.

This type of friction is essential in fields like automotive engineering, manufacturing, and robotics because it affects the efficiency and wear of moving parts.

Rolling friction is generally lower than sliding friction, making it crucial in designing vehicles and other wheeled machinery to optimize performance and reduce energy consumption.

Rolling friction, Froll(N) in Newtons is equal to the product of rolling resistance coefficient, Crr and normal force, N(N) in Newtons, N.

Learn More:   Propeller Torque Calculator, Formula, Propeller Torque Calculation

Rolling friction, Froll(N) = Crr * N(N)

Froll(N) = rolling friction in Newtons, N.

Crr = rolling resistence coefficient.

N(N) = normal force in Newtons, N.

### Rolling Friction Calculation:

1. Calculate the rolling friction for a car tire:

Given:

• Coefficient of rolling resistance, Crr = 0.03
• Normal force (weight supported by the tire), N(N) = 3000 N

Rolling friction, Froll(N) = Crr * N(N)

Froll(N) = 0.03 * 3000

Froll(N) = 90N.

1. Determine the total rolling friction for a four-wheeled wagon:

Given:

• Coefficient of rolling resistance, Crr = 0.015
• Rolling friction, Froll(N) = 3 N

Rolling friction, Froll(N) = Crr * N(N)

N(N) = Froll(N) / Crr

N(N) = 3 / 0.015

N(N) = 200N.

### Applications and Considerations:

• Automotive Design: Lower rolling resistance improves fuel efficiency in vehicles.
• Sports Equipment Design: Optimal rolling friction enhances performance in sports like bowling or golf.
• Material Science: Engineers focus on material properties to minimize rolling friction in bearings and gears.