Question

f the lever in the picture below has a force advantage of 1, then...Select one:a. the effort force must be the same as lifting force.b. the effort force must be less than lifting force.c. the effort force must be greater than lifting force.d. any of the above could be true.

Answer 1

a. the effort force must be the same as lifting force.

Explanation

A lever is a simple machine consisting of a rigid rod which is capable of turning around a pivot called a fulcrum.

A lever amplifies an input force to provide a greater output force, Mechanical advantage is a measure of the force amplification achieved by using a tool, The ratio of the output force to the input force is the mechanical advantage of the lever.

$advantage=\frac{output\text{ force}}{input\text{ force}}$

hence

Step 1

if the lever in the picture below has a force advantage of 1, it means

$\begin{gathered} advantage=\frac{output\text{ force}}{input\text{ force}} \\ 1=\frac{output\text{force}}{\imaginaryI nput\text{force}} \\ input\text{ force = output force} \end{gathered}$

so, the imput force must be equal to the output force, therefore, the answer is

a. the effort force must be the same as lifting force.

I hope this helps you