Friction and the Road

 

Diagrams of Road Friction

 

Our Equipment

 

Experimental Procedure

 

Data and Results

 

What This Means

 

Tire Sledding!

 

Bibliography

 

THANKS!!!

 

 

 

TIRES:

 

 

 

 

 

Studded Winter Tire

Studless Winter Tire (Car)

Studless Winter Tire (Truck)

Mud Tires

All Season Tires

Summer Tire

Bald Tire

STATIC COEFFICIENT OF FRICTION (IN LBS):

 

 

104lbs

94lbs

92lbs

84lbs

80lbs

76lbs

72lbs

 

RESULTS:

As expected, the tires that claimed to have better tread and more traction took more force to move at first (see chart above) meaning that they would grip the road better than the tires with less traction and tread. Our results, in general, agreed with the predicitons made by the consumer reports about these particular tires. Thus the hypothesis that tires with more traction will have a higher coefficient of friction and thus will perform better under slippery and icy conditions was indeed correct.