October 9th, 2017, 05:04 AM  #1 
Banned Camp Joined: Oct 2017 From: Boston Posts: 2 Thanks: 0 Math Focus: Algebra  Help to solve
An acrobatic airplane performs a loop at an airshow. The centripetal acceleration the plane experiences is 14.7 m/s2. If it takes the pilot 45.0 seconds to complete the loop, what is the radius of the loop? Just waiting for answer as well Last edited by greg1313; October 11th, 2017 at 12:59 PM. 
October 9th, 2017, 05:54 AM  #2 
Senior Member Joined: Apr 2014 From: Glasgow Posts: 2,133 Thanks: 719 Math Focus: Physics, mathematical modelling, numerical and computational solutions 
Circular motion: Centripetal acceleration: $\displaystyle a = \frac{v^2}{r}$ $\displaystyle v = r \omega$ and $\displaystyle \omega = \frac{2 \pi}{t}$ Therefore $\displaystyle a = \frac{4 \pi^2 r}{t^2}$ Rearrange that equation for $\displaystyle r$ and solve. 
October 9th, 2017, 06:24 AM  #3 
Senior Member Joined: Feb 2016 From: Australia Posts: 1,749 Thanks: 613 Math Focus: Yet to find out. 
"Studydaddy"... What the..

October 9th, 2017, 07:38 AM  #4 
Math Team Joined: Dec 2013 From: Colombia Posts: 7,559 Thanks: 2558 Math Focus: Mainly analysis and algebra  
October 9th, 2017, 08:03 AM  #5  
Senior Member Joined: Jun 2015 From: England Posts: 891 Thanks: 269  Quote:
Guess what it said.  

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