Angular ,Radial,linear accelerations

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Homework Help Overview

The discussion revolves around a physics problem involving a car navigating a corner, focusing on angular speed, angular acceleration, and linear acceleration. The problem includes specific values for the car's speed and acceleration, and it raises questions about calculating radial acceleration over time.

Discussion Character

  • Exploratory, Conceptual clarification, Mathematical reasoning

Approaches and Questions Raised

  • The original poster attempts to calculate angular speed and acceleration, expressing confusion about the radial acceleration after a specified time. Some participants question the calculations presented, particularly regarding the method for determining radial acceleration and the interpretation of the equations used.

Discussion Status

The discussion is ongoing, with participants seeking clarification on the calculations and the relationships between the different types of acceleration. There is engagement around the methods used, but no consensus has been reached on the correct approach to the radial acceleration question.

Contextual Notes

Participants note that the problem involves specific homework constraints, including the requirement to find angular and linear accelerations before addressing radial acceleration. There is some uncertainty about the interpretation of the problem statement and the calculations provided.

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Homework Statement


A car is going around a corner with a radius of 68m. At one instant, its speed is 19m/s and its speed is increasing at a rate of 3.2m/s^2.
What are the angular speed and the angular acceleration of the car at this instant?
What is the total linear acceleration of the car?
If the angular acceleration remains constant, what will the radial acceleration be after 1.4s?

Homework Equations


I got alpha=.047rad/s^2 for the first one with aTan/r=alpha
6.2 m/s^2 for the second with aRad^2+3.2^2 under square root
I am lost on the 3rd
 
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How do I find the radial acceleration after 1.4 seconds if the angular acceleration remains constant?
 
I guess I have a hard question?
Im thinking to solve this is by using the constant formulas. I really am confused on this tho.
 
How did you calculate the radial acceleration when the speed is 19m/s? You did not show this.
Do you know how to calculate this one?
 
Part A and B did not ask for radial acceleration.
A) what are the angular speed and angular acceleration of the car at this instant?
B) What is the total linear acceleration of the car?

C) If the angular acceleration remains constant, what will the radial acceleration be after 1.4s?
Unless I am not understanding your question
 
So how did you calculate linear acceleration?
What do you mean by
"aRad^2+3.2^2 under square root"?
 

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