Question

What is the force advantage of the lifting pulley system below?Select one:a. 1b. 2c. 3d. 4

Answer 1

Explanation

Having a mechanical advantage means the force applied by the system is greater than the force you put in,The main advantage in the use of pulleys is that it reduces the amount of actual force required to lift heavy objects. It also changes the direction of the force applied

The mechanical advantage of a pulley is system is equal to the number of ropes supporting a movable pulley

therefore,in this case we have.

Step 1

$\begin{gathered} F+F=500\text{ N} \\ 2F=500\text{ N} \\ F=\frac{500N}{2} \\ F=250\text{ N} \end{gathered}$

so, the applied forceis 250 N

Step 2

now, to find teh advantage , we need to use the expression

$\begin{gathered} force\text{ advantage=}\frac{output\text{ force}}{input\text{ force}} \\ replace \\ force\text{ advantage=}\frac{500\text{ N}}{250\text{ N}} \\ force\text{ advantage=2} \end{gathered}$

therefore, the answer is

b. 2

I hope this helps you