(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A 3812.0 kg truck is parked on a 18.1° slope. What is the friction force on the truck?

2. Relevant equations

3. The attempt at a solution

So i set up a triangle with and then used:

weight of truck= (9.8 m/s^2 *3812 Kg) = 37367.6 N

sin(18.1) = (37367.6 N) /(-Ff)

Ff = -120246 N

Could someone explain why this is wrong.. im thinking maybe i set up my triangle incorrectly, but i dont know how else i would draw it.. thanks in advance

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Force of Friction on object on an incline

**Physics Forums | Science Articles, Homework Help, Discussion**