Samantha builds a lever to lift objects in a 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?(1 point)

Question

Responses

7.6 m
7.6 m

3.2 m
3.2 m

8.4 m
8.4 m

0.05 m

Answer 1

To find the length of the effort arm, we can use the formula for mechanical advantage:

Mechanical Advantage = Load Arm / Effort Arm

8 = 0.4 / Effort Arm

Rearranging the equation to solve for the Effort Arm:

Effort Arm = Load Arm / Mechanical Advantage
Effort Arm = 0.4 / 8
Effort Arm = 0.05 m

Therefore, the length of the effort arm should be 0.05 meters.