1. What is a moment and how can it help to move objects?
Moments
Lessons 11 and 12/21
What is a moment and how can it help to move objects?
Starter
Look at the following slide and match the tool to the job.

2. C A B E D

3. Glossary Moment = The turning effect of a force
Pivot- the point about which an object turns when acted on by a force that makes it turn.

4. Moments

5. Moment = Force (N) x distance (m)
Look at the equation. What is the unit for a moment?
Pivot or Fulcrum
Effort

6. Well actually it’s…. Moment (Nm) = force (N) X
perpendicular distance from line of action to force of pivot
Moment (Nm) = force (N) X
For example;
A 0.3 m long crow bar is used to life a box with a weight of 50N .
What was the moment?

7. Tasks Higher- complete the worksheet and be prepared to move on.
Foundation – complete the worksheet

8. Higher Only Balancing Moments …
Look at this situation. What must be true about the moments on a stable seesaw?

9. Moment = force x distance
In equilibrium;
The sum of the clockwise movement about the pivot
The sum of the anti clockwise movement about the pivot. =

10. Which way will the seesaw tip? Why?

11. How could you balance the elephant and the bunny.
Bunny weighs 10 N
Elephant weighs 100N
Length of seesaw = 20m (10 m either side of piviot)

12. Which way will the seesaw tip? Why?
10m from pivot 1m

13. A seesaw in equilibrium.
80x3.75 = 50x6

14. Practise the questions