Lever Mechanical Advantage Quiz

Which of the following are reasons to use levers?

• To increase the force applied to a lever

• To increse the distance an object is moved

• To increase the speed at which a load is moved

• All of the above

Which of the following is NOT a part of a lever

• Wheelbarrow

• Arm

• Fulcrom

• Load

What does the resistance force represent in the context of levers?

• a) The force required to move the load

• b) The distance the effort force moves

• c) The weight of the load

• d) The distance the load moves

What is the formula to calculate mechanical advantage using force?

• a) MA = Effort Distance / Resistance Distance

• b) MA = Input Force / Output Force

• c) MA = Effort Arm / Resistance Arm

• d) MA = Force x Distance

Why is friction minimal at the fulcrum in levers?

• a) Because levers have a low mechanical advantage

• b) Because levers have a high mechanical advantage

• c) Because levers have very little energy loss to friction

• d) Because levers have a high amount of energy loss to friction

What are the three main uses for levers?

• a) To decrease force, distance, and speed

• b) To decrease the distance an object is moved

• c) To increase the force applied to a lever

• d) To increase the friction at the fulcrum

What is the mechanical advantage of a lever if the effort arm is 6 feet and the resistance arm is 2 feet?

• a) 1

• b) 2

• c) 3

• d) 4

What is the effort force required to lift a 300-newton rock using a lever with a mechanical advantage of 3?

• a) 200 newtons

• b) 250 newtons

• c) 300 newtons

• d) 100 newtons

What three ways can the mechanical advantage of a lever be calculated?

• Force

• Distance

• Arm Length

• All of the above

Which of the following is NOT an everyday lever?

• door handle

• fork

• pliers

• wheelbarrow