Moments OALH

Streamlining an object means...

A streamlined object can travel ______ than a non-streamlined object

Describe what increases in size when a substance is heated

What flame should I leave Bunsen burner on if I am not using it

Calculate the average (mean), but exclude the anomaly:

3.48 3.46 3.45 3.21

Companies spend millions of pounds designing cars which are as streamlined as possible. Write a sentence naming three ways that you could streamline a car to make it faster.

Define "moment"

Define "pivot"

State what moments are used for?

How can you increase the moment?

Write the equation used to calculate a moment.

Define "moment"

Define "pivot"

State what moments are used for?

How can you increase the moment?

Write the equation used to calculate a moment.

1. A moment is....?

2. The point in the diagram above is called the?

3. How do you calculate a moment?

4. The units for a moment are?

Calculate the anticlockwise moment

Calculate the anticlockwise moment

Explain what would happen to the seesaw, (calculate both anticlockwise and clockwise moments then compare).

1. A mechanic pushes on a spanner with a force of 50N. He pushes on the spanner 40cm from the end of the spanner.

What is the force and the distance?

2. Calculate the moment of the force using the information from Q1 (help below).

- Moment of the force (Nm) = Force (N) x Distance from pivot (m)

- Moment of the force (Nm) = _______ x ________

- Moment of the force = ______ Nm

3. A mechanic pushes on a spanner with a force of 50N. He pushes on the spanner 40cm (0.4m) from the end of the spanner.

What is the force and the distance?

4. Calculate the moment of the force using the information from Q3.

(Show how you would work it out).

5. Calculate the moment of this force. Show your working.

6. Look at this example of a balanced system.

a) Calculate the size of the clockwise moment

b) State the size of the anticlockwise moment _____________

c) Calculate the distance x.

7. STRETCH: Would the moment be bigger or smaller if he used a longer spanner? Explain your answer.