first you have to find Fgx, which is mgsin(35). but your total is Fgx-Fk.
to find Fk, you need to find Fn, which is mgcos(35). from your coeffiecient of friction, you can find Fk, MkFn=Fk which is (.18)(mgcos(35))
when you find Fgx-Fk, you set that equal to ma, find acceleration and then...
Homework Statement
so my teacher assigned me a to find the mass of this key without a scale using strings at whatnot.
Homework Equations
The Attempt at a Solution
i tried setting up the system like this:
____ceiling_____
\ /
\/
O
|...