(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

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# Kinetic Friction Problem

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