You may have seen different kinds of machines like pulley, wheelbarrow, cutters, and others, You have seen also how they work. A machine increase or multiplies forces. You've seen a mechanic using a jackscrew to lift heavy track. You prefer to use beat eggs faster. We've seen also a flag can be hoisted up a hole a pole using a pulley and it is easier for us to transport loads using wheelbarrow. Machines can also transfer nergy. Hydrocrowbar lifting a heavy load easily.Lastly, Machines can tranfer energy. Hydroelctric power plants use generators to convert mechanical to elctrical energy.