Does a crane have a pulley?AND....Is an axe a wedge?THANX CUZ I DONT KNOW WHAT IM DOING, AND OMG IM SO GOING TO FAIL MY TEST BECAUSE IM SO DUMB.
Yes, a crane has a pulley in order to reduce the workload. Each time there is a loop of the pulley made the workload is reduced.
yes a crane is a pulley and an axe is a wedge pulley-A pulley, also called a sheave or a drum, is a mechanism composed of a wheel on an axle or shaft that may have a groove between two flanges around its circumference wedge -A wedge is a simple machine used to push two objects apart. A wedge is made up of two inclined planes. These planes meet and form a sharp edge. This edge can split things apart.
Of course cranes have pulleys. If you know how they work it should be clear. Why else do you think there are two, or more (depending on the crane), ropes attached to their hook. Every rope added, except for the first, halves the weight of the object you want to lift. If you have two ropes and an object is 5 tones, the crane will only need the power to lift 2,5 tonnes. If it has six ropes it even only need the power to lift one tonne. And an axe is a wedge, logically. In fact, every tool with a blade is more or less a wedge. After all the wedge is the principal of a blade's function.
