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

A force of 85N is applied to a block on an incline that makes an angle of 35 degrees with the horizontal. The coefficient of kinetic friction between the block and the incline is [tex]\mu[/tex]_{k}=0.45. The block is moving and accelerating up the incline at 1.5 m/s^{2}.

2. Relevant equations

(a) Find the mass of the block

(b) If the block is initially movingdownat 2.6 m/s, what is its speed 3.6s after the 85N force is applied?

3. The attempt at a solution

(a) F=ma --> m= 85N/1.5m/s = 56.7kg

(b) I have no idea

**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: Kinetic Friction Problem

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