MACHINE

What is a simple machine?

• A device that helps reduce the amount of force required to do work
• A device that helps increase the amount of force required to do work

What is a lever?

• •a moveable bar that cannot move around a fixed point, called a fulcrum.
• •a rigid bar that is free to move around a fixed point, called a fulcrum.
• •a moveable bar that is free to move around a fixed point, called a fulcrum
• •a rigid bar that cannot move around a fixed point, called a fulcrum

The place where a lever pivots is called the _______.

• Load
• Force/Effort
• Fulcrum
• Rigid Bar

What class of lever is this?

• 1st class
• 2nd class
• 3rd class
• None of the above

Which type of lever is this?

• First Class Lever
• Second Class Lever
• Third Class Lever
• Coach  Class Lever

A wheelbarrow is an example of a:

• 1st class lever
• 2nd class lever
• 3rd class lever

What class lever is a fishing rod?

• 1st

• 2nd

• 3rd

What class lever does this picture show?

• 1st

• 2nd

• 3rd

VR> MA, for a _______ machine

• ideal

• practical

When we want to use a machine as a speed multiplier then,

• Effort > load

• Effort < load

• Effort = load