For the sliding collar of Prob. 3/103, if m = 0.5 kg, b = 0.8 m , and h = 1.5 m, and if...

For the sliding collar of Prob. 3/103, if m = 0.5 kg, b = 0.8 m , and h = 1.5 m, and if the velocity of the collar as it strikes the base B is 4.70 m/s after release of the collar from rest at A, calculate the work Q of friction. What happens to the energy which is lost?