Centripetal Acceleration of car

Click For Summary
SUMMARY

The discussion centers on calculating the relative speeds of two cars, A and B, driving in circular paths with different radii and centripetal accelerations. Car B's radius is twice that of Car A, while its centripetal acceleration is three times greater. Using the formula for centripetal acceleration, a = (v^2/r), the conclusion is that Car B is driving 2.45 times faster than Car A. The key to solving this problem lies in establishing relationships between the velocities and radii of both cars.

PREREQUISITES
  • Understanding of centripetal acceleration and the formula a = (v^2/r)
  • Basic knowledge of circular motion dynamics
  • Ability to manipulate algebraic equations
  • Familiarity with using subscripts to denote different variables
NEXT STEPS
  • Review the derivation of centripetal acceleration equations for varying radii
  • Explore the relationship between velocity and radius in circular motion
  • Study examples of problems involving multiple objects in circular motion
  • Learn about the implications of varying acceleration in different physical contexts
USEFUL FOR

Students studying physics, particularly those focusing on mechanics and circular motion, as well as educators looking for problem-solving strategies in dynamics.

bgrove
Messages
1
Reaction score
0

Homework Statement


Two cars drive around in circles at constant speeds. Car B's circle is twice as large as car A's, but its centripetal acceleration is three times as large. How many times faster is car B driving than car A?

Homework Equations


I'm trying to use a=(v^2/r) for centripetal acceleration.

The Attempt at a Solution


I don't really know where to start on this one.

Per our answer key, the answer should be: 2.45 times faster.
 
Physics news on Phys.org
You want to find a relation between the velocity of car A and car B, and you're given a relation between the radii of their circular paths and a relation between their centripetal accelerations. Try to write down some equations.
 
Use subscripts to represent the parameters for A and B. Thus, rA, vA, and aA are the radius, velocity, and acceleration of A, respectively, and similarly for B. Now, in terms of these parameters, write the centripetal acceleration equations for A and B respectively. How is rA related to rB? How is aA related to aB? This should give you enough to solve the problem.

Chet
 

Similar threads

  • · Replies 3 ·
Replies
3
Views
1K
Replies
12
Views
2K
  • · Replies 4 ·
Replies
4
Views
2K
  • · Replies 28 ·
Replies
28
Views
3K
Replies
6
Views
3K
Replies
55
Views
3K
Replies
7
Views
2K
  • · Replies 5 ·
Replies
5
Views
3K
  • · Replies 9 ·
Replies
9
Views
4K
  • · Replies 3 ·
Replies
3
Views
4K