Views : 11,223,708
Genre: Education
Date of upload: Nov 30, 2023 ^^
Rating : 4.945 (4,380/313,584 LTDR)
RYD date created : 2024-05-03T05:34:11.607781Z
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Top Comments of this video!! :3
I am currently 6 weeks from earning a Purdue Aerospace Engineering BS, I have completed the requirements for a physics minor, ive taken 2 graduate level astronomy courses and a graduate level Space Traffic Management course that dealt with sidereal time on every assignment, but this is easily the best conceptual explanation of sidereal time I have ever seen. Genuinely incredible educational content, I'm blown away.
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The 1872 novel “Around the World in Eighty Days” had a plot that depended on this kind of situation. Phileas Fogg traveled around the world eastward, against the earth’s rotation. Though initially he thought he’d missed the 80 day deadline by some hours, in fact only 79 days had passed in London. One extra rotation had passed beneath his feet. He won the prize, married the girl and lived happily ever after.
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Here’s my guess, if the wheel A is revolving like a wheel then you divide both the circles circumference. Circle A has a radius of X and circle B has a radius of 3X, to find the circumference we multiply the radius by two and then times PI, making Circle A have a circumference of 2XPi and circle B having a circumference of 6X PI, so it should be 3
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This explanation is the best i have found. The idea of the distance the centre of the planet circle travels and then deriving ratios makes the most sense to me and your graphics helped me to grasp this. It's fascinating. Not too mention the perspective element influencing the answer!! What i didn't realise is that the extra rotation is accounted for as well if observing from the perspective from the centre of the "sun" circle by the fact that the observer has to rotate once to continuously observe the "planet" circle
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This concept is quite important while solving Rotation problems in Physics.
Instantaneous Centre of Rotation, given that it is pure rolling i.e. there is no slipping at the point of contact.
It at this centre of instanteous rolling the entire circle or rigid body is pure rotating.
Thanks for sharing.
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@duckyfam9012
1 month ago
“I was amazed how badly it’s worded,” literally half of the SAT problems.
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