Problemas
cissors are an example of a compound machine What simple machines are used to make up this compound machine? 2 levers and 2 pulleys 2 levers and 2 inclined planes 2 pulleys and 2 inclined planes
Roztwór
Fabián
élite · Tutor durante 8 años
4.5
(314 Votos)
Respuesta
2 levers and 2 pulleys
Explicación
A compound machine is a machine formed from a set of simple machines connected in series with the aim of reducing the overall force required to perform a task. In the case of scissors, they are a compound machine made up of two simple machines: levers and pulleys. The handles of the scissors act as levers, which are rigid bars that pivot around a fulcrum. The blades of the scissors act as pulleys, which are wheels with a groove around their edge for a rope or chain to run in, used to change the direction of the force applied. There are two of each in a pair of scissors, making the correct answer 2 levers and 2 pulleys.