Technology: levers and leverages

Simple machines

• Wheel

• Pulley

• Lever

• Water bottle

• Computer

What is called a point around which the lever turns

What is the place where u can push or pull the lever

• Effort(input)

• Load(output)

• Effort(output)

• Load(input)

What is the object that wanted to get lifted or moved

• Effort(input)

• Load(output)

• Effort(output)

• Load(input)

A lever allows us to use less effort to move or lift load gives...

• Mechanical advantage

• Movement advantage

• Movement average

The MA can change by

• The pivot moving

• The load moving

• The more of effort

How to calculate MA

• = Effort/ Load

• = Load/ Effort

• = Load/ Effort/ Pivot

First class lever

• Load going up,

  Pivot middle,

  Effort going down

• Effort going up,

  Load on top on middle point down,

  pivot at the end

• Pivot, Effort going up, load underneath but pointing up.

Second class lever

• Load going up,

  Pivot middle,

  Effort going down

• Effort going up,

  Load on top on middle point down,

  pivot at the end

• Pivot, Effort going up, load underneath but pointing up.

Third class lever

• Load going up,

  Pivot middle,

  Effort going down

• Effort going up,

  Load on top on middle point down,

  pivot at the end

• Pivot, Effort going up, load underneath but pointing up.