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Quick PLEASE help

  • Thread starter iRaid
  • Start date
  • #1
559
8
Quick PLEASE help :(

Homework Statement


A car can decelerate at -4.80 m/s2 without skidding when coming to rest on a level road. What would its deceleration be if the road were inclined at 13[tex]\circ[/tex] uphill? Assume the same static friction coefficient.


Homework Equations


Ff=[tex]\mu[/tex]SFN


The Attempt at a Solution



Well I cant find anyway to even start can someone head me in the right direction?
 

Answers and Replies

  • #2
559
8


I think I got some of it:
[tex]\Sigma[/tex]F=ma
Ff+FN-Fg-Fp=ma
Ff+FN-ma-Fp=ma
+ma both sides and +Fp
Ff+FN=2ma+Fp
[tex]\mu[/tex]sFN+FN=2ma+Fp


Now I'm wondering if there is actually Fp for the car or not (force of push). Would there still be a pushing force of the car when decelerating?
Stuck there now :\
 

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