Lever Quiz

What is a lever?

• A beam or rigid structure that rotates around a fixed point

• A flexible structure that bends under pressure

• A solid object that remains stationary

• A tool used for cutting

Which of the following is NOT a component of a lever?

• Axis (A)

• Force (F)

• Resistance (R)

• Tension (T)

In a first-class lever, what is the component in the middle?

• Fulcrum

• Resistance

• Force

• Load

Which of the following is an example of a second-class lever in the human body?

• Neck (head nodding)

• Calf raise (ankle)

• Bicep curl (elbow)

• Knee (bending)

Which sport activity is an example of a third-class lever?

• Rowing

• Push up

• Baseball bat, kicking a ball

• Standing long jump

How does changing the length of the lever affect the force and speed of movement in sports?

• It increases the force and decreases the speed

• It decreases the force and increases the speed

• It has no effect on force and speed

• It increases both force and speed

What determines the mechanical advantage of a lever?

• The weight of the lever

• The length of the force arm compared to the resistance arm

• The material of the lever

• The color of the lever

In first and second class levers, what does a longer force arm compared to the resistance arm mean?

• More force is required to move the resistance

• Less force is required to move the resistance

• The lever will break easily

• The lever will not work

In third class levers, what does a shorter force arm and a longer resistance arm mean?

• Less force is required but allows for greater speed at the resistance end

• More force is required but allows for greater speed at the resistance end

• The lever will not function

• The lever will be more durable

In baseball, what is one advantage of using a longer bat?

• It is easier to control

• It generates more velocity at the point of impact

• It is lighter

• It is cheaper