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

A 3.50 kg block slides 3.40 m down a long 15 degrees inclines ramp. the coefficient of friction between the block and the ramp is 0.30. find the following: (a) the work done on the block by friction (b) the work done on the block by gravity (c) the work done on the block by the normal force (d) the total work done on the block. If the block has a speed of 5.0 mps at the top of the ramp, (e) find its speed after sliding 3.40 m down the ramp.

2. Relevant equations

3. The attempt at a solution

Wfk - work by friction

Wg - work by gravity

Wn - work by normal force

Wt - total work

(a) -0.30*(3.50*9.8*sin 15) = Wfk

(b) Wg = (3.50*9.8*cos 15) = Wg

(c) 3.5*9.8*sin 15 = Wn

(d) Wfk + Wg + Wn = Wt

(e) ?

am I correct with the solutions that I made. I feel like I made something wrong and how do you find (e)? pls tell me.

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# Homework Help: Coefficient of friction between the block and the ramp

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