Proving Friction on an Inclined Surface

[majdeee]

Friction HELP!

if we have a mass on an inclined surface moves with a constant velocity Prove that:
µk=m/M*sec a -tan a

 

[cristo]

You need to state the exact question in order for anyone to understand what the question is asking! Also, since it is homework, please show some of your own thoughts on the question.

 

[cristo]

The end of that is cut off, and again, you've not posted the question!

 

[SoVeryConfused]

Please edit the picture so that we can actually see all of your work! =]