Pulleys and Inclined Planes Quick Check
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Question
Use the picture to answer the question.
An illustration shows a man lifting a box using a pulley.
What is accomplished by this simple pulley?
(1 point)
This simple pulley allows the man to lift the box with less effort by reducing the amount of force needed to lift the box.
so it changes the direction of the force needed to lift the box?
Yes, the pulley changes the direction of the force needed to lift the box. Instead of lifting the box directly upward with a lot of force, the person can pull down on the rope with less force and still lift the box due to the mechanics of the pulley.
To determine what is accomplished by this simple pulley, we need to understand the basic principle of how pulleys work.
A pulley is a simple machine consisting of a wheel with a groove along its edge and a rope, cable, or belt running through the groove. It allows for the redirection of force by changing the direction of the applied force.
In the given illustration, the man is lifting a box using a pulley. By using the pulley, the man is able to lift the box with less effort compared to directly lifting it. The pulley helps to distribute the weight of the box more evenly, making it easier for the man to lift.
Therefore, what is accomplished by this simple pulley is the reduction of the amount of force required to lift the box.