Rosie (mass 59 kg) pushes a box with a hor-
izontal force of 150 N (33.72 lb) at a speed
16 m/min. What is Rosie's power output?
Answer in units of W.
2007-01-19 14:16:10 · 3 answers · asked by kavita 1 in Science & Mathematics ➔ Physics
Power = work done/time taken
= Force x distance/ time taken
= Force x velocity
150 x 16/60 watts
2007-01-19 14:45:36 · answer #1 · answered by hello 6 · 0⤊ 0⤋
150 N x 16m = 2400 N-m of work in 1 min. 'Don't know the conversions but you're dealing with 2400N-m/min.,40N-m/sec,144,000N-m/hour..... I think you ignore Rosie's 59kg. mass because moving her is not "output".
2007-01-19 14:45:09 · answer #2 · answered by Richard S 6 · 0⤊ 0⤋
Are you trying to make us do your H.W. by asking so many work and power questions?
2007-01-19 21:19:37 · answer #3 · answered by Mave Rick 1 · 0⤊ 0⤋