I have two questions regarding this, any help would be GREAT! 1st Problem: 1. The problem statement, all variables and given/known data A conveyor belt lifts 1000kg of rocks per minute a vertical distance of 10m. The rocks are at rest at the bottom of the belt and are ejected at 5 m/s. The power supplied to this machine is: A) 1000W B) 1260W C) 1630W D) 1840W E) 2100 W 2. Relevant equations P=Fv p=mv [tex]\sum[/tex]F[tex]\Delta[/tex]T=m(vf-vo) 3. The attempt at a solution vo = 0m/s vf = 5m/s 1000kg/min = 16.67kg/s sumF[tex]\Delta[/tex]T=m(vf-vo) sumF=m(vf-vo)/[tex]\Delta[/tex]T sumF=m(vf)-m(vo)/[tex]\Delta[/tex]T since vo = 0/ms sumF=m(vf)/[tex]\Delta[/tex]T sumF=m/[tex]\Delta[/tex]T (vf) subbing in values... m/dT = 16.67kg/s F = (16.67)(5) = 83.35N and now for Power... P = Fv P = 83.35(5) = 416.75W Now, I know i've done something wrong, especially as I haven't accounted for height. I feel like I am EXTREMELY off with attempting to solve this so i'd appreciate any help. 2nd Problem: 1. The problem statement, all variables and given/known data Water runs out of a horizontal pipe at the rate of 120kg/min. It falls 3.20m to the ground. Assuming the water doesn't splash up, what average vertical force does it exert on the ground? 2. Relevant equations P=Fv p=mv sumF[tex]\Delta[/tex]T=m(vf-vo) 3. The attempt at a solution SOLVED THIS ONE - if anyone else needs the solution though let me know and i'll post it. Still need help on the first though... workin' on it however.