3rd Class Levers Quiz

What is the definition of a 3rd class lever?

• A 3rd class lever is a type of lever where the load is applied between the fulcrum and the effort.

• A 3rd class lever is a type of lever where the fulcrum is applied between the effort and the load.

• A 3rd class lever is a type of lever where the load and the effort are applied at the same point.

• A 3rd class lever is a type of lever where the effort is applied between the fulcrum and the load.

In a 3rd class lever, where is the effort applied in relation to the fulcrum and the load?

• after the fulcrum

• before the fulcrum

• between the fulcrum and the load

• directly on the fulcrum

Give an example of a 3rd class lever in the human body.

• triceps brachii muscle

• deltoid muscle

• pectoralis major muscle

• biceps brachii muscle

In a 3rd class lever, which component has the greatest mechanical advantage: the effort, the fulcrum, or the load?

• fulcrum

• none of the above

• effort

• load

True or False: In a 3rd class lever, the effort arm is always longer than the load arm.

• Not applicable

• Sometimes

• True

• False

What is the mechanical advantage of a 3rd class lever?

• greater than 1

• less than 1

• equal to 1

• not applicable

Name a tool or device that uses a 3rd class lever.

• hammer

• wheelbarrow

• pliers

• screwdriver

In a 3rd class lever, does the effort need to be greater than the load to achieve mechanical advantage?

• Yes

• Sometimes

• It depends

• No

What is the formula to calculate the mechanical advantage of a 3rd class lever?

• Effort Arm Length + Resistance Arm Length

• Effort Arm Length - Resistance Arm Length

• Effort Arm Length * Resistance Arm Length

• Effort Arm Length / Resistance Arm Length

Can a 3rd class lever change the direction of the force applied?

• Yes

• Only if the force is strong enough

• Sometimes

• No