measuring Moments

During this topic you will learn about the turning forces and how you can change them.  You will also learn how to calculate moments and balance forces.


3.1 Energy, electricity and forces: b) forces are  interactions between
objects and can affect their shape and  motion
 

• Explain what turning forces are and how to change  them
• Understand the principle of moments
• Describe  how turning forces are use
• Explain how organs and tissues in animals  function to support movement
• Apply ideas about forces  to explain how objects move

Key Terms 

force                    fulcrum                    lever
screw


                
  

 incline plane                   
principle of moments
antagonistic muscles
           
    

wedge                 
leverage
arm
       

pulley
axle
force
fulcrum

applied force
wheel
anticlockwise moment clockwise moment
mechanical advantage

Class Activities

Lever Activity
Lever Activity data table
Click here to review the Simple Machine Powerpoint presentation
Calculating Moments worksheet.
Balancing on a Beam
Introduction to Moments worksheet 1
Introduction to Moments worksheet 2

Useful Links
BBC Bitesize
S-Cool

Learning Checklist
I can measure the size of a force and use the right units
I can describe situations where forces are balanced or unbalanced
I can describe what happens to the turning effect of a force using a longer lever
I can describe how to balance a see-saw
I can apply the principle of moments to explain situations
I can explain how turning forces are used in levers

Video Clips