Power-Dome
| Favorite team: | LSU  |
| Location: | |
| Biography: | |
| Interests: | |
| Occupation: | Engineer |
| Number of Posts: | 1111 |
| Registered on: | 11/29/2012 |
| Online Status: | Not Online |
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re: TDGB MASTERS PICKEM - TDTOM has won a romantic encounter with Rummy!
Posted by Power-Dome on 4/15/24 at 10:25 am
[quote]Scheffler Aberg Homa Day McCarthy Straka Glover[/quote]
The winning picks...
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re: tOfficial 2024 Masters Tournament Thread: Scottie Scheffler (-11) is your Masters Champion
Posted by Power-Dome on 4/14/24 at 9:29 am
Tiger is just strolling down the fairway talking this amateurs ear off...
re: Can this 747 take off?
Posted by Power-Dome on 4/11/24 at 10:01 pm
My interpretation in this rolling-friction-counter-force model was that the tread goes fast enough that the center axle as zero velocity. The vectors at the top and bottom of the wheel would be equal and opposite.
I posed a thought experiment earlier with a small toy plane with no engines on nee...
re: Can this 747 take off?
Posted by Power-Dome on 4/11/24 at 9:39 pm
Yes I get it that it’s impossible but the riddle implies that the speeds match, any natural scenario would have the thrust force dominate the frictional drag. ...
re: Can this 747 take off?
Posted by Power-Dome on 4/11/24 at 9:32 pm
How is wheel speed going to be different than any other part of the plane...
re: Can this 747 take off?
Posted by Power-Dome on 4/11/24 at 9:27 pm
Except x is a velocity and y is a force in your case, your units aren’t equal ...
re: Can this 747 take off?
Posted by Power-Dome on 4/11/24 at 9:07 pm
It is not level ...
re: Can this 747 take off?
Posted by Power-Dome on 4/11/24 at 8:55 pm
[quote]The thrust from the engines is significantly larger than any force the treadmill could exert on the wheels.[/quote]
Yes that’s why it is impossible, but for the sake of the riddle, the treadmill is able to go this fast to create the force required to counteract the thrust of 4 jet engines....
re: Can this 747 take off?
Posted by Power-Dome on 4/11/24 at 8:51 pm
The treadmill is decelerating in the gif, all else equal...
re: Can this 747 take off?
Posted by Power-Dome on 4/11/24 at 8:08 pm
Think about this scenario…
You have a small 6” wingspan model plane made of very light balsa wood, and a little propeller. The plane is so light weight that it doesn’t really need [i]that[/i] much speed to get airborne. Because of this, the lift off velocity is attainable by the treadmill in yo...
re: Can this 747 take off?
Posted by Power-Dome on 4/11/24 at 5:26 pm
I think if someone built a device that is capable of producing this test, it would end in a scenario where the plane does not take off.
The balancing force against the thrust would come from the tangential force required to turn the wheels backwards against the forward rolling from thrust. This ...
re: Can this 747 take off?
Posted by Power-Dome on 4/11/24 at 4:37 pm
[quote]Yet you said the wheels were motionless[/quote]
I did not say they were motionless, I said they were not rotating...
re: Can this 747 take off?
Posted by Power-Dome on 4/11/24 at 2:42 pm
[quote]so you also ignore the question as it was asked. lol[/quote]
How so? I read the question as the the treadmill belt will match the speed of the wheels. In my scenario, the wheels and treadmill are moving at the same speed...
re: Can this 747 take off?
Posted by Power-Dome on 4/11/24 at 2:37 pm
The plane starts out with zero thrust, zero forward velocity, zero wheel rotation, zero treadmill rotation.
The wheels do not turn, and the jet will propel the treadmill track forward, while the wheels remain at zero rotation, and then it will get fast enough to take off in the conventional sens...
re: Does a plane achieve lift by pushing a wing through the air or by pulling air over a wing?
Posted by Power-Dome on 4/11/24 at 8:15 am
You can’t pull a fluid...
re: Arkansas Police Arrest Suspect in Grave Site Flower Theft Case
Posted by Power-Dome on 4/10/24 at 4:46 pm
Try that in a small town!...
re: TDGB MASTERS PICKEM - TDTOM has won a romantic encounter with Rummy!
Posted by Power-Dome on 4/10/24 at 6:02 am
T1: Brooks, Scheffler
T2: Jason Day, Shane Lowry
T3: Adam Scott, Nicolai Hojgaard
T4: Charl Schwartzel
Thank you for hosting!...
re: Ideas for my son to start inviting his friends to our house
Posted by Power-Dome on 4/7/24 at 7:08 pm
Golf sim setup...
re: Houston Open
Posted by Power-Dome on 3/31/24 at 3:08 pm
Would be cool to be on the course because all they’re showing on tv is putting...
re: What are the prettiest irons?
Posted by Power-Dome on 3/28/24 at 8:52 am
I always thought the MP-18's were standouts on looks
[img]https://pluggedingolf.com/wp-content/uploads/2017/11/Mizuno-MP-18-Irons_0114.jpg[/img]...
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