Question

For the racecars to stay on the road while traveling at high speed, how does a friction force need to be exerted? (a) Parallel to the roadway and outward (b) Parallel to the roadway and toward the infield (c) Horizontally toward the center of the track (d) Opposite the direction of motion (c) None of the above

Name: Problem 75, Chapter 5: College Physics Explore and Apply
Uploaded: 2020-11-08T03:16:39-08:00
Duration: 1 min 4 s
Channel: Eric Mockensturm
Description: For the racecars to stay on the road while traveling at high speed, how does a friction force need to be exerted? (a) Parallel to the roadway and outward (b) Parallel to the roadway and toward the infield (c) Horizontally toward the center of the track (d) Opposite the direction of motion (c) None of the above

   For the racecars to stay on the road while traveling at high speed, how does a friction force need to be exerted?
(a) Parallel to the roadway and outward
(b) Parallel to the roadway and toward the infield
(c) Horizontally toward the center of the track
(d) Opposite the direction of motion
(c) None of the above

College Physics Explore and Apply

Eugenia Etkina; Alan… 2nd Edition

Chapter 5, Problem 75

Instant Answer

Solved by Expert Eric Mockensturm

11/08/2020

Step 1

The normal force acts perpendicular to the road surface, and the friction force acts parallel to the road surface. Show more…

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For the racecars to stay on the road while traveling at high speed, how does a friction force need to be exerted? (a) Parallel to the roadway and outward (b) Parallel to the roadway and toward the infield (c) Horizontally toward the center of the track (d) Opposite the direction of motion (c) None of the above

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Key Concepts

Friction

Friction is the resistive force that acts when two surfaces interact. In the context of circular motion for vehicles, the friction between the tires and the road provides the necessary centripetal force by acting toward the center of the curve, ensuring the car remains on its curved path.

Centripetal Force

This concept refers to the net force that acts on an object moving in a circular path, directed toward the circle's center. It is essential for maintaining circular motion, since any object moving along a curved path must continually change its direction, and this change is enabled by a force directed inward.

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