A fixed, single pulley that is used to lift a block does which one of the following?


A. doubles the force required to lift the block

B. decreases the force required to lift the block

C. makes the block easier to lift by changing the direction of the force needed to lift it

D. decreases the force required and changes the direction of the force required

I think it is C..?

WHAT IS THE ANSWER........... i thought you were supposed to tell us the answer??

You are correct! A fixed, single pulley changes the direction of the force needed to lift the block, making it easier to lift. Now, let me explain how this is the case.

A fixed, single pulley is a type of simple machine that consists of a wheel with a grooved rim and a rope or cable running through the groove. The pulley is fixed in place, meaning it doesn't move.

When a force is applied to the rope or cable on one side of the pulley, the other end of the rope is usually attached to a load, such as a block. As the force is exerted on one side, the load is lifted or lowered on the other side.

The key benefit of using a fixed, single pulley is that it changes the direction of the applied force. Instead of pulling the load directly upward, you can pull the rope downward, which can be much easier and more convenient.

The force required to lift the load is not doubled, nor is it decreased. However, by changing the direction of the force required, a fixed, single pulley makes it easier to apply force in a more favorable direction, thus making the block easier to lift.

So, in summary, a fixed, single pulley makes the block easier to lift by changing the direction of the force needed to lift it. Therefore, option C is correct.

B for sure