Viscosity of a Liquid (Extension) - OCR PAG 1.2 PRACTICAL - A Level Physics
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- Опубликовано: 9 сен 2024
- In this video I go through an OCR Physics A Level Required Practical that uses a ball bearing and a viscous liquid to investigate viscosity of a liquid. (This is an extension of the OCR PAG 1.2 practical.)
This is an extension task that allows you to calculate the viscosity of the liquid that an object is moving through. The equation looks daunting and relies on Stokes' Law, however, once you have measured all the terms you simply input the data to find a value for viscosity.
All Year 12 OCR Required Practicals can be found at:
www.alevelphys...
Thanks for watching,
Lewis
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"Sticky" might not be the best term to use if you wanted to explain viscosity. "Resistance to flow" would be more apt.
Isn't it supposed to be 4/3 pie r cubed for volume
How do you plot a velocity vs time graph for this? for every reading do I just use v=s/t? Its not coming out the same as your graph.
@Vipa567 Record the falling ball on a smart phone in slow motion. Play it back and then plot a table to show the distance (m) and time (s) as the ball falls through the liquid. Use a ruler positioned next to the free fall tube and clearly visible on the playback of the video. The closer your values, the more accurate it will be.
From these results, you can calculate the velocity of the falling ball at different points of it's drop.
Then you can plot your velocity/time graph.
The more accurate you are and the greater the frequency of your measurements, the better your graph will be.
for the solution of the density is it the mass of the ball or the liquid in the cylender
I did this but I'm not sure I got the right answer.. Do you know the ballpark figure of what the answer will be?
Why are you speaking just second in the video?????