|By Aditya Banerjee||
|May 19, 2014 12:07 AM EDT||
In case you were wondering…
Also, would make for a very interesting exam question…
Answer by Mahek Mody:
Let's start with a slight detour – There is a very famous (& I think very cool) physics fact about pole vault. When a pole vaulter jumps a high bar, her Center of Gravity (CG) need not go as high as the bar she needs to clear. In other words, at the top of the jump the pole vaulter needs to go over the bar and not her CG. To achieve this the pole vaulter arches her back forwards or backwards to be in a situation where the body is clear of the bar but the CG passes under for the most optimal jump. The idea being that Newton's laws only dictate the trajectories of the CG and not the entire body.
Lynn's miraculous falling back within the boundary rope is something similar. After the little stumble he has just before he makes his jump, he has his eyes on the ball. Assess the trajectory of the ball, and it looks something like this -
Now Lynn considers jumping straight up and try get the ball. Is there a chance he can make it? His jumping ability is limited and there is only a limit to which he can raise his CG. He would not have caught the ball.
However, if he jumped and turned back at the same time things could look very different even if the his jumping ability is considered to be the same. As this diagram illustrates -
At this point if a snap was taken it seems as if he would fall on the boundary rope, but he has some angular (spin) momentum on his side which a still would not capture.
He does exactly that makes the catch and after which since his CG is still very much inside the boundary region he can easily use his flexible and agile body to bring his hands inside the boundary rope. Eventually using his hands to safely land well within the boundary.
I am sure Lynn did not go through all this physics in his mind before making the catch, but intuition is a powerful physics engine due to the world experience it has.
Cross posted on my blog –
Filed under: Thoughts
The IoT is changing the way enterprises conduct business. In his session at @ThingsExpo, Eric Hoffman, Vice President at EastBanc Technologies, discussed how businesses can gain an edge over competitors by empowering consumers to take control through IoT. He cited examples such as a Washington, D.C.-based sports club that leveraged IoT and the cloud to develop a comprehensive booking system. He also highlighted how IoT can revitalize and restore outdated business models, making them profitable ...
Jul. 23, 2016 07:15 PM EDT Reads: 1,853
Jul. 23, 2016 07:00 PM EDT Reads: 807
Jul. 23, 2016 07:00 PM EDT Reads: 1,410
Jul. 23, 2016 06:30 PM EDT Reads: 1,330
Jul. 23, 2016 06:15 PM EDT Reads: 763
Jul. 23, 2016 06:00 PM EDT Reads: 1,858
Jul. 23, 2016 05:30 PM EDT Reads: 1,703
Jul. 23, 2016 05:30 PM EDT Reads: 1,527
Jul. 23, 2016 05:30 PM EDT Reads: 1,965
Jul. 23, 2016 05:15 PM EDT Reads: 646
Jul. 23, 2016 05:00 PM EDT Reads: 931
Jul. 23, 2016 05:00 PM EDT Reads: 1,779
Jul. 23, 2016 04:45 PM EDT Reads: 895
Jul. 23, 2016 04:30 PM EDT Reads: 668
The cloud competition for database hosts is fierce. How do you evaluate a cloud provider for your database platform? In his session at 18th Cloud Expo, Chris Presley, a Solutions Architect at Pythian, gave users a checklist of considerations when choosing a provider. Chris Presley is a Solutions Architect at Pythian. He loves order – making him a premier Microsoft SQL Server expert. Not only has he programmed and administered SQL Server, but he has also shared his expertise and passion with b...
Jul. 23, 2016 04:00 PM EDT Reads: 1,805