+0  
 
0
297
1
avatar+23 

A 985kg car is driving in a circular track with a constant speed of 25.0 m/s. The circumference of the track is 2.75km. Find the centripetal acceleration of the car??????????

MicahSmith07  Oct 19, 2017
 #1
avatar+91116 
+1

I'm not great at Physics but I believe the equation we need is :

 

a =   v^2  / r

 

Where  ac  is the centripetal acceleration, v is the velocity and r is the radius

 

Note..... convert 2.75 km to meters  =   2750 m....this is the circumference....so to find the radius we have  r  =   2750 / [2 pi ]   =  [ 1375 / pi ]  m

 

So we have

 

ac = [25m/s]^2 / [1375 / pi ] m  = 

[ 625 m^2 / s^2]  / [ 1375 / pi ] m   = 

 [ (5/11 ) pi ]   m / s^2 ≈ 

 [ 0.4545 pi ]   m / s^2 ≈

1.428 m / s^2

 

cool cool cool

CPhill  Oct 19, 2017

15 Online Users

avatar
avatar
avatar

New Privacy Policy

We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive information about your use of our website.
For more information: our cookie policy and privacy policy.