Question

20) Which of the following is an example of a pulley being used to do work.

OA) lowering the blinds of a window by puling a rope attached to a wheel
OB) raising a person into the air by sitting on one end of a seesaw
OC) using your teeth to bite into an apple

Answer 1

The correct answer is option A) Lowering the blinds of a window by pulling a rope attached to a wheel. A pulley is a simple machine that changes the direction of a force, making it easier to lift or lower objects.

Step-by-step explanation:

The correct answer is option A) lowering the blinds of a window by pulling a rope attached to a wheel.

A pulley is a simple machine that consists of a grooved wheel with a rope or cable running along the groove. It is used to change the direction of a force, making it easier to lift or lower objects. In the given example, the pulley system allows the blinds of a window to be lowered by pulling a rope attached to a wheel, making it an example of a pulley being used to do work.

Learn more about Pulley as a simple machine