Simple Machines (Levers)

What simple machine is depicted in all three images?

• Pulley

• Wheel and axle

• Lever

• Inclined plane

Which of the following is NOT an example of a lever?

• A seesaw

• A fishing rod

• A wheelbarrow

• A screwdriver

What is a lever?

• A) A complex machine that reduces the amount of force needed to move an object.

• B) A simple machine that changes the amount of force you must exert in order to move an object.

• C) A tool used to measure the force required to move an object.

• D) A device that increases the weight of an object.

What does it mean to exert a force on an object?

• A) To pull or push on an object without moving it.

• B) To apply a pressure on an object from a distance.

• C) To use a lever to move an object.

• D) To apply a push or pull to move or attempt to move an object.

What is the definition of a fulcrum in the context of a lever?

• The force supplied to any machine to produce an action

• The mass of an object that is moved or lifted

• The lever's fixed point of rotation

• The distance from the fulcrum to the load

What does the term "load" refer to when discussing levers?

• The lever's fixed point of rotation

• The force supplied to any machine to produce an action

• The distance from the fulcrum to the effort force

• The mass of an object that is moved or lifted

What is the effort force in the context of a lever?

• The distance from the fulcrum to the load

• The mass of an object that is moved or lifted

• The lever's fixed point of rotation

• The force supplied to any machine to produce an action

What is the Effort Arm in the context of the diagram provided?

• The distance between the load (L) and the fulcrum (F)

• The distance between the effort force (E) and the fulcrum (F)

• The part of the lever that moves the load

• The point at which the lever rotates

What does the Load Arm represent in the diagram?

• The distance between the effort force (E) and the fulcrum (F)

• The distance between the fulcrum (F) and the load (L)

• The part of the lever that is pushed down by the effort

• The point at which the lever is supported

Where is the fulcrum located in a class 1 lever?

• At one end, next to the load

• Between the effort force and the load

• At one end, next to the effort force

• Outside the lever system