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

A girl of mass mg=47 kg is pulling a sled up a slippery slope. The coefficient of friction between the girl's boots and the slope is µs=0.160; the friction between the sled and the slope is negligible. The girl can pull the sled up the slope with a ≤ amax=0.015 m/s2 before she begins to slip. Assume the rope connecting the girl to the sled is kept parallel to the slope at all times. The angle of the slope is θ = 6°.

If the sled is being pulled up the slope with a=amax, what is the mass of the sled?

mg = 47kg

µs=0.160

amax=0.015 m/s2

θ = 6°

2. Relevant equations

fnet=ma

Fs = Fnµs

3. The attempt at a solution

m(0.015m/s^2) = Fs - Mgsinθ

m(0.015m/s^2) = 73.3N + m(9.81m/s^2)sin6

m = 72.54kg

72.54kg-45kg = 27.5kg

i tried everything 27.5kg isn't the right answer what am i doing wrong someone please help i need to figure this out by tomorrow

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

Dismiss Notice

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: Incline Forces Question

Can you offer guidance or do you also need help?

Draft saved
Draft deleted

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