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## Homework Statement

Find the work done by friction force as it slides down an inclined plane in terms of...

m (Mass)

x (Displacement)

μ (Friction Coefficient)

θ (Angle of the inclined plane)

## Homework Equations

ƩFnormal = mgcos(θ)

ƩFhorizontal = mgsin(θ)

ƩFfriction = μFnormal - But then I realised these three equations all linked together which used gravity... which isn't suppose to be used)

F = ma

w = max

## The Attempt at a Solution

What I came up with was:

Work = mgx(μcos(θ) + sin(θ))

Which doesn't seem right and uses gravity...

Help Please! Thanks.