I with Radial Acceleration -it is an easy one

Click For Summary

Homework Help Overview

The discussion revolves around calculating the centripetal (radial) acceleration of an airplane's propeller, given its period of rotation and linear speed. The subject area includes concepts of circular motion and acceleration in physics.

Discussion Character

  • Mixed

Approaches and Questions Raised

  • Participants explore the relationship between linear speed, period of rotation, and centripetal acceleration. There are attempts to clarify the problem setup and definitions, particularly regarding the term 'airplane ellipse'.

Discussion Status

Several participants have provided calculations and feedback on the working shown. There is recognition of potential errors in the calculations, particularly concerning decimal placement. The discussion reflects a collaborative effort to refine the approach without reaching a definitive conclusion.

Contextual Notes

Participants are encouraged to show their working and previous attempts, emphasizing the forum's focus on guidance rather than providing direct solutions.

loom
Messages
4
Reaction score
0
The period of the rotation of an airplanes ellipse is T=3 milliseconds,linear speed in the top is 3*10^3 m/s.What's the centripetal(radial) acceleration of the top?I need a step by step guide it would be really helpful.Thanks.
 
Physics news on Phys.org
Work?
 
If I knew what an 'airplane ellipse' is, I could probably help you.
 
Sorry I meant an airplanes propeller.
 
As physicsvalk kindly stated, show your previous working or attempts, we're here to help, not do it for you.
 
Ok I did it.

v=3000 m/s
T=0.003s

v=s/t 3000m/s = s / 0.003s s=vt s=3000m/s * 0.003s s=9m

s=2piR 9m=2*3.14*R r=9m/6.28 r=1.432m

a=v^2/r a=(3000m/s)^2 / 1.432m = 6.284916m/s^2
 
Yep, you got the same answer as I did. Your working is a little difficult to follow though.
 
Woops, no wait. Its wrong, because I made the same mistake you did. Its an order of magnitude mistake. (The numbers are right, but the decimal place is wrong).

Maybe try again? I think you will get it right second time, since it is only the decimal place that is wrong, you must have been close, but maybe made a silly error?
 
In fact, I think it is just on the last line where you went wrong.
 
  • #10
yes it should have been 6284916m/s^2.Thanks to all for helping
 
  • #11
yep, no worries
 

Similar threads

Acceleration of the cart on a Ferris Wheel (Circular Motion)
  • · Replies 11 ·
Replies
11
Views
2K
Is My Calculation of Centripetal Acceleration and Tangential Velocity Correct?
  • · Replies 12 ·
Replies
12
Views
2K
Tangential and radial acceleration
  • · Replies 1 ·
Replies
1
Views
2K
Why Use Angular Acceleration Instead of Radial?
  • · Replies 3 ·
Replies
3
Views
4K
Finding radial & tangential acceleration at a point
  • · Replies 7 ·
Replies
7
Views
6K
Clarification on different kinds of acceleration
  • · Replies 6 ·
Replies
6
Views
2K
Angle between radius and acceleration
  • · Replies 4 ·
Replies
4
Views
2K
Tangential, Radial and total acceleration
  • · Replies 1 ·
Replies
1
Views
2K
Understanding Coriolis Force in a Rotating Pipe
  • · Replies 6 ·
Replies
6
Views
3K
What actually is the centripetal acceleration formula?
  • · Replies 28 ·
Replies
28
Views
3K