Simple Machine

Simple Machine

​Machines

​Any device used to make our work easier is called a machine.

Open Ended

Why do we need machines?

​Types of machines

​1. Simple Machine

​2. Complex Machine

Multiple Choice

Which of these is an example of complex machine?

• Lever

• Car

• wheel and axle

• Screw

Fill in the Blanks

There are

types of simple machine.

​Types of simple Machines

​1.Lever

​2.Screw

​3.Pulley

​4.Wheel and axle

​5. Inclined Plane

​6.Wedge

Open Ended

What is lever?

​Lever consist of three parts

​1.Effort

​2. Fulcrum

​

​3.Load

Poll

Lever is of _________ types

• 4

• 2

• 6

• 3

​Lever of first order or Class One Lever

​Fulcrum is between load and effort

Multiple Choice

Which of the following is a class one lever?

• See-Saw

• Scisssor

• Beam Balance

• All

Open Ended

Give one example of lever of first order.

​Lever of second order or Class two lever

Load is located in between the effort and fulcrum

Poll

Wheel barrow is which level lever?

• Class One Lever

• Class Two Lever

• Class Three Lever

Multiple Choice

Which of these is not an example of class two lever

• Can Opener

• Sea saw

• Wheel Barrow

​Lever of Third-Order or Class Three Lever

​Effort is between Load and Fulcrum

Multiple Choice

In which class lever load is loacted between fulcrum and effort

• Class One

• Class Two

• Class Three

Multiple Choice

Fulcrum is loacted between load and effort in ________ order lever

• One

• Two

• Three

Multiple Choice

For third class lever, Which of the following is located in the centre?

• Fulcrum

• Effort

• Load

Fill in the Blanks

Arm is an example of which order lever.

Open Ended

How arm is an example of Class One Lever?

Poll

Knee joint is an example of which class lever?

• 1

• 2

• 3

Open Ended

How knee joint is an example of class 2 lever?

Fill in the Blanks

is like a nail with grooves cut in it.

Draw

Draw an example of screw.