Chapter 12 – – Simple Machines

Conservation of energy demands that: Input work = output work + work against friction. Input work = output work + work against friction. F. ii. sF oo s ()Work f An . An idealor perfect machine is 100% efficient and (Work) f . f = 0, so that. or . oi iioo io. Fs FsFs s s The ratio s. ii /s o . o. is the ideal mechanical advantage. ................
................