I have a problem with the exercise "Sharpen your pencil" at pag.495.
Point d says:"Use the fact that frictional.... to arrive at an equation that only involves the components of FFric
, the mass, the coefficient and the gravitational field strength".
But in the answer I see : u(mg - Frv
) = Frh
Is this correct ?
I'm not English mothertounge, so maybe this is the reason..
But I don't really get it: I see only components of Frope
and NOT compenents of Ffric