relative velocity rolling wheel
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- Опубліковано 12 бер 2013
- This question really tests your ability to apply the relative motion formula Va/b = Va - Vb. A few consequences of this are that the bottom of the wheel rotating has an instantaneous velocity of 0m/s ! Something that might be very counter intuitive! That's because the translational component of velocity perfectly cancels out the rotational component of the velocity. A truly outstanding result.
I am studying for the FE exam and this video is so helpful Thank you!
Thank you. Very well explained in sample words. :)
When do you use the cross product for finding V with R and W?
Buster Keaton showed this in a very funny way. He was sitting on a cross linkage between two train wheels and it was filmed by someone standing on the ground beside the track. Instead of going round in a circular motion he was bobbing up and down with a deadpan expression on his face.
So easy how you explain it. Thanks
Happy it helps ! :D
Can someone send the link of the previouse vedeo to this
My general rule is that what you observe depends partly on what is happening to you.
IN NO BOKS THIS HAS BEN EXPLAINED CLEARELY THANKS MAN
+THANOJ S SURENDRAN Thanks! Yeah I agree, a lot of these small proofs are often hard/impossible to find. Glad you found my video helpful :D
I was stuck on a problem that looked almost exactly like this a while ago, and after watching your video I could solve it! =D
Thanks a lot!
From Which App You Made This Video....???
@matthew James
Thanks! I watched your other video and I understood it !:)
Hey mate, I'm glad you liked it!
how did you come up with saying that V_ao= AO*w?
is that trig?
Hey mate, it's a circular motion formula (V=rw) the velocity of Va/o is the velocity of A relative to the velocity of O. Because it's relative to O that means this Va/o is the velocity due purely due to rotation about point O. (imagine sitting on point O and watching point A - you'd notice it only rotates about you!). Because it's pure rotation, we can use circular motion formulas.
Does that make sense?
ua-cam.com/video/etV5-WHw2Yw/v-deo.html
Must watch this video.
god bless you!!!!!!!!!!!!!!!!!!!!!
Thanks :D
shouldnt va=2vo?
Isn't beta always 45 degrees for a rolling wheel?
beta?
My apologies I mean theta. (:
whatthefiretruck69 Ah ok. No it's not. It's only 45 in this very specific case. If we were finding V_b for example, the angle of V_b from the horizontal would be exactly 0 ! (since V_b is purely horizontally to the right!). Does that make sense? Email me if it doesn't and explain further.
ua-cam.com/video/etV5-WHw2Yw/v-deo.html
Must watch this video.
This is wrong because it states relative velocity always equals square root of 2 times Vo. I have a problem that Vo equals 5m/s and answer is not 7.7 but 9.2
Im assuming you were studying for the FE too cuz i have the same problem. Did u find out why this video does not apply?
excellent - thank u -- amarjeet
No worries. Thank you for your feedback.
a fifth grade student is able to solve this problem
Hello :) If you're looking for something a bit more challenging and different then I recommend trying this puzzle out: ua-cam.com/video/07ASXRo4Ksw/v-deo.html
Good luck!
ua-cam.com/video/etV5-WHw2Yw/v-deo.html
What about this problem?
try some indian educater, you will find the same thing easier and smarter too
nah he explained pretty good