Question

Please help me with math!

Answer 1

`(F_(f))/(m*g*cos(x)) =u`

Explanation:

The statement says the following:

`F_(f)= u*F_(N) \\F_(N)=m*g*Cos(∅)`

We need to find 'u' given that we know the following terms:
`F_(f), F_(N)`, m, g, ∅

The way to do that is to substitute not known expression into known expression, we will use the expression of
`F_(N)` in
`F_(F)`

This leads to

`F_(f)=u*m*g*cos(∅)`

Finally we can obtain 'u' by dividing the whole equation with the terms that are with 'u'

We have this

`(F_(f))/(m*g*cos(x)) =u`

Where 'u' is the variable that you are looking for