Question

A) A class __ lever never has a mechanical advantage.
A class __ lever always has a mechanical advantage.
A class __ lever could go either way. (1 point)
3; 2; 1
1; 2; 3
2; 3; 1
2; 1; 3
A) A lever is used to lift an object with a weight of 60 Newtons. The effort force is 15 meters from
the fulcrum, while the load force is 5 meters from the fulcrum. What is the mechanical advantage?
(1 point)
3
12
4
75

Answer 1

For the first question about levers:

- A class **3** lever never has a mechanical advantage.
- A class **2** lever always has a mechanical advantage.
- A class **1** lever could go either way.

So the answer is: **3; 2; 1**.

For the second question regarding mechanical advantage (MA), the formula for mechanical advantage is:

\[
\text{Mechanical Advantage (MA)} = \frac{\text{Distance from the fulcrum to the effort}}{\text{Distance from the fulcrum to the load}}
\]

In this case:
- Distance from the effort to the fulcrum = 15 meters
- Distance from the load to the fulcrum = 5 meters

Now, apply the values in the formula:

\[
\text{MA} = \frac{15 \, \text{meters}}{5 \, \text{meters}} = 3
\]

Thus, the mechanical advantage is **3**.