i have a friend over and we are bored as hell we have no money, no car and she is leaving in less than 2 hourswhat is there to do? plus we have a big backyard and stuff but what is there to do w| two ppl?
a) By Work energy relation:- W PE(gain) mgh (mg)h 22 x 10^3 x 25 5.5 x 10^5 J b) By P W/t [5.5 x 10^5]/12 4.58 x 10^4 Watt 4.58 x 10^4/746 HP 61.44 HP
Hello Michael, work done is calculated by the formula W Fs Here F 22000 N ie 2.210^4 N and s 25m ie 2.510^1 m Hence work done 5.5010^5 J As the data have only two significant figures, so it will be enough to have two significant figures for work done tooSo work done 5.510^5 J Now power is computed by dividing W by t ie timeHere time t 12 s Hence power 5.510^5/12 4.58333.10^4 WOnce again only two significant figure is enough, so the power P 4.610^4 WI have forgotten the tables connecting W and horse powerI hope 1 HP 762 WPlease get the right value and divide 4.610^4 by that value and you can get in HP.
