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

A 3kg block is pulled by a rope up a 37 degree incline at constant speed. If the tension in the rope is 45N and the rope is parallel to the incline, calculate the coefficient of kinetic friction between the block and the incline.

2. Relevant equations

a = acceleration (0 m/s_{2})

Ө = theta (37 degrees)

g = 9.8 m/s^{2}

m = mass

T = Tension

μ = coefficient of friction

N_{F}= Normal Force

friction = μN_{F}

N_{F}= mgcosӨ

3. The attempt at a solution

My attempt was setting up the equation: TsinӨ - mgsinӨ - friction = ma

OR 45sin(37) - (3)(9.8)sin(37) - μ(3)(9.8)cos(37) = 0

OR 27.1 - 17.7 = μ23.5

OR 9.4 = μ23.5

Finally,μ = .4

Just wondering if it's correct. =)

**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: Forces and Inclines

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