Mechanical Advantage Quiz

What is the formula for the mechanical advantage (MA) of a lever?

• MA = Effort / Load

• MA = Effort arm / Resistance arm

• MA = Resistance arm / Effort arm

If a lever has an effort arm of 3 meters and a resistance arm of 1 meter, what is the mechanical advantage?

• 1

• 2

• 3

• 4

Increasing the length of the effort arm while keeping the resistance arm the same will:

• Decrease mechanical advantage

• Increase mechanical advantage

• Have no effect

• Decrease efficiency

A lever has a mechanical advantage of 5. This means:

• It reduces the effort force needed

• It increases the force needed

• It reduces friction

• It makes the object heavier

If the mechanical advantage of a lever is less than 1, it means:

• More effort is needed than the load force

• Less effort is needed than the load force

• The lever is balanced

• The lever has no mechanical advantage

What is the formula for the mechanical advantage of an inclined plane?

• MA = Height / Length

• MA = Length / Height

• MA = Load / Effort

• MA = Effort / Load

A ramp is 10 meters long and 2 meters high. What is the mechanical advantage?

• 2

• 5

• 10

• 20

How does increasing the length of an inclined plane affect its mechanical advantage?

• Increases it

• Decreases it

• No effect

• Makes it zero

If the height of an inclined plane increases but the length remains the same, what happens to the mechanical advantage?

• It increases

• It decreases

• It remains the same

• It becomes infinite

What is the formula for the mechanical advantage of a wheel and axle?

• MA = Axle radius / Wheel radius

• MA = Wheel radius / Axle radius

• MA = Load / Effort

• MA = Axle length / Wheel length