Answer Happy

Two farmers use an electrically powered elevator to lift bales of hay. All the bales of hay have the same mass. bale of hay elevator wwww As sunset approaches, they increase the speed of the elevator so that more bales are lifted up in a given time. How does this affect the work done in lifting each bale and the useful output power of the elevator? work done in lifting each bale useful output power of the elevator A increases decreases increases B increases с decreases no change no change D increases