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## Homework Statement

A block of mass " lying on a ramp tilted at an

angle with the horizontal is connected to

another block of mass # by a light string passing

over a frictionless pulley as shown. If the block

slides up the ramp with a constant velocity ),

what is the coefficient of kinetic friction $%?

## Homework Equations

f=ma

## The Attempt at a Solution

ƩF

_{1x}x = m

_{1}a

F

_{t}- μ

_{k}F

_{n}= m

_{1}a

ƩF

_{1y}= m

_{1}a

_{1y}

F

_{n}- mgcosθ = m

_{1}a

_{1y}

I can figure out the F

_{t}from the other mass. But where I am stuck is I have 3 unknowns and 2 equations. I cant find a way to solve for μ

_{k}when I dont have θ.

Thanks for the help