Exam Science Types Of Levers Junior6 Part2

The lever is a rigid bar that rotates around a fixed point called resistance

Any lever consists of a resistance force and an effort force only

The effort force is a force that is exerted by a person to equilibrate the resistance

The crowbar is an increasing force lever

Levers make tasks easier

Wheelbarrow and nutcracker save the exerted effort

Water pump is a kind of levers which pick up the very small objects

Levers were first described by the Greek scientist Archimedes

In the first class levers, the resistance is between the effort force and fulcrum

From the functions of levers is to increase the force

Among the functions of levers is to decrease the distance

From the functions of levers is to decrease the speed

The fulcrum in scissors lies between force and resistance

The crowbar is an example of the first class levers

In the 2nd class levers, the resistance is between the effort force and fulcrum

The third class levers are the most popular type of levers

Pliers are composed of three first class levers

Nail clippers have fulcrum between the effort force and the resistance force

The third class levers have fulcrum between the effort force and resistance

Stapler, bottle opener and hammer claw are examples of third class levers

In hockey bat, the effort force is between the resistance force and fulcrum, so it is a first class lever

The second class levers have the effort force between the resistance and fulcrum

The fulcrum of any lever is always between force and resistance

The nutcracker is considered as a first class lever

Soda water opener is a second class lever, while the fishing tool is a first class lever

Levers make tasks easily

Levers were first described by the Greek scientist Archimides

In the first class levers, the resistance is between the effort force and fulcrum

The fulcrum in scissors lies between force and resistance

The crowbar is an example for the first class levers

In the 2nd class lever, the resistance is between the effort force and fulcrum

The third class levers have fulcrum between the effort force and resistance

The second class levers have the effort force between the resistance and fulcrum

The fulcrum of any lever is always between force and resistance

The nutcracker is considered as a first class lever

Some of the levers allow the increase in the speed of objects we inflict on as in the manual broom

Seesaw, scissors and bottle opener are examples for the first class levers

The fulcrum lies between the effort force and the resistance force in the third class levers

Nutcracker is from the first class levers

In the second class levers, the effort force is between the resistance force and fulcrum

The force x its arm = the resistance x its arm

When the resistance arm is longer than the effort arm, so the lever save effort

If the arm of force is shorter than the arm of resistance, the lever conserve effort

The third class levers always save effort

In the third class levers the arm of force may be equal the resistance arm