looks like a fun problem, just gotta understand it: A 500g block slides down a radial track with height of 1.0 m, it's radius is 1.0 m, with velocity of 4 m/s at the end of the track. what is the loss of the TME? Disipation of energy problem: TMEf - TMEo F * D = K.E.f + P.E.f - (K.E.o + P.E. o) friction * cos(180) * D = (1/2 mv^2f + mghfo) - (1/2mv^2o + mgho) f(-1)(1) = (1/2)(500)(4)^2 + 0 - (500)(9.8)(1) Can someone please confirm this? is the loss of TME = 900 N = Friction ??