Ellen needs to move a heavy box across the floor and then place it on a shelf that is four feet above the floor. Which use of machines would most likely require the least amount of force in order to get the box on the shelf?

sliding the box up an inclined plane to the shelf
rolling the box up an inclined plane on a cart
sliding the box across the floor and then lifting it using a pulley
rolling the box across the floor in a cart and then using a pulley

Respuesta :

The correct answer is:

B. Rolling the box up an inclined plane on a cart

An inclined plane is a machine used to raise up an object through a height with minimum effort.

An inclined plane is a simple machine which consists of a slopping surface tilted at an angle. The inclined plane is mostly used to raise a heavy object that would otherwise require a lot of effort if not for the inclined plane.

The machine that would most likely require the least amount of force in order to get the box on the shelf is sliding the box up an inclined plane to the shelf.

Learn more: https://brainly.com/question/14983337

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