Investigating Terminal Velocity - OCR PAG 1.2 PRACTICAL - A Level Physics

In this video I go through an OCR Physics A Level Required Practical that uses a ball bearing and a viscous liquid to investigate terminal velocity. (This is the OCR PAG 1.2 practical.)

There are a lot of ways to investigate the terminal velocity of an object moving through a fluid. You can drop paper cupcake cases, or in this example a ball bearing through bubble bath. The exact set up varies with the equipment at your school, but in this video I explain how you can use video to record the data which is then analysed.

All Year 12 OCR Required Practicals can be found at:

Thanks for watching,

Lewis

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[johnkamitsuka]

I have been looking for a cheap, non-messy liquid for this practical. Thanks for that!

[alanaswain]

Could you please make videos for the rest of a-level practicals. Thanks :)

[nyainadarlene]

Thanks so much I have been looking for a cheap explanation 💜

[PikaPluff]

Great stuff! We have just finished this practical last week. Will you be doing more OCR practicals?

[LukeHaslerMusic]

When we did this PAG our teacher wouldn't give any advice and we didn't have much time so we rushed into the experiment without thinking. The tubes were about a metre tall and so dropping the ball bearing in was difficult. This meant we dropped it from the air into the washing up liquid and so all of our results indicated that the ball bearing had decelerated despite gravity. Don't ya love it when your PAG just fails?!

[ruerue]

Ohh so this is what my teacher wanted to say😂

[orzone]

So what would be the independent and dependent variables?

[Alfster]

Why a viscous fluid? Looks like that reached terminal velocity almost instantly? Would air or water not work better?

[bobfrediii]

How do you get velocity from speed and time