Samantha built a lover to lift objects in the science experiment the load arm is 0.4 Samantha built a lover to lift objects in the science experiment the load arm is 0.4 meters if she wants the lever to have a mechanical advantage of 8 how long should the effort arm be

Answer 1

To find the length of the effort arm needed for the lever to achieve a specific mechanical advantage (MA), you can use the formula for mechanical advantage in levers:

\[ \text{Mechanical Advantage (MA)} = \frac{\text{Length of Effort Arm}}{\text{Length of Load Arm}} \]

In this case, you've provided the following:

• Length of Load Arm = 0.4 meters
• Desired Mechanical Advantage (MA) = 8

We need to find the Length of the Effort Arm (E). We can rearrange the formula to solve for E:

\[ E = MA \times \text{Length of Load Arm} \]

Substituting the values we have:

\[ E = 8 \times 0.4 \]

Calculating this gives:

\[ E = 3.2 \text{ meters} \]

Therefore, the length of the effort arm should be 3.2 meters to achieve a mechanical advantage of 8.