Motion lesson 2

OUTCOME

By the end of the lesson you will recognise the direction of centripetal force and be able to apply the centripetal acceleration formula to problems

Engage

For an object to travel in circular motion a force needs to be applied. This force is always directed into the centre with a magnitude of

F_c = mv²/r

LEARNING TASKS

Explain

1. Why is the velocity of an object in motion described as tangential?.

2. What are the two Latin words that make up the word centripetal? Why is it relevant here?

3. Why does Doc Physics suggest circles are unnatural?

Explore and Elaborate

Practical Activity: Spinning bob

Evaluate and consolidate

Try Qs 20 - 28