- #1

crosbykins

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**URGENT physics find angle of inclined plane! help!?**

## Homework Statement

A block slides down an inclined plane at a constant velocity of 0.14m/s. The coefficient of kinetic friction is 0.45. What is the angle of inclination?

## Homework Equations

Fnetx = Fk -mgsintheta

Fnety = FN -mgcostheta

## The Attempt at a Solution

FN-mgcosΘ = 0

FN =mgcosΘ

FN µK –mgsinΘ =0

FN = mgsinΘ/.45

mgcosΘ = mgsinΘ/.45

.45 = mgsinΘ/ mgcosΘ

.45 = tanΘ

tan-1.45 =Θ

24⁰ =Θ

Is this correct? What I don't understand is that shouldn't Fnetx include an Fapp? The question doesn't give a value for Fapp so I don't how you would use it to find the answer.