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(II) Drag-race tires in contact with an asphalt surface
Chapter 19, Problem 44P(choose chapter or problem)
Problem 44P
Problem
(II) Drag-race tires in contact with an asphalt surface have a very high coefficient of static friction. Assuming a constant acceleration and no slipping of tires, estimate the coefficient of static friction needed for a drag racer to cover 1.0 km in 12 s, starting from rest.
Questions & Answers
QUESTION:
Problem 44P
Problem
(II) Drag-race tires in contact with an asphalt surface have a very high coefficient of static friction. Assuming a constant acceleration and no slipping of tires, estimate the coefficient of static friction needed for a drag racer to cover 1.0 km in 12 s, starting from rest.
ANSWER:
Solution 44P: We have to calculate the value of coefficient of static friction whose value depends upon the nature of the surface in contact and independent to applied force, as per the given situation. Step 1 of 3 Concept: Newton’s second law: The net force F acting on an object of mass m produces an acceleration a in that object. Mathematically, F= ma. Frictional force also acts on the surface of the bodies in contact whenever their is relative motion between between the two bodies.