a) Relevant equation: Emec = DU + DK If there are no nonconservative forces, this equation equals zero. Or in this case, some K is transformed into Eint (heat). So the equation becomes: Emec = Ff.d. (F in Newton, distance in meters and N.m = J). -> DU + DK = Ff.d Then, 0,5 ...
March 8, 2012