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the physics of situps



 
 
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  #1  
Old December 4th 09, 05:33 AM posted to sci.physics,misc.fitness.misc,rec.martial-arts,alt.martial-arts.karate,rec.org.mensa
Fraser Johnston[_3_]
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Default the physics of situps


"Daniel" wrote in message
...
Obviously respect for people
trying to help you is something that you have not learned from the
MAs...which you should have done.
++++++++++++++++++++++++++++++++++++++++++++++++++ +

Bwahahahahahahaha. Welcome to rec,martial-arts.

Fraser


  #2  
Old December 7th 09, 11:27 AM
prince8585 prince8585 is offline
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hello friends,
how the heck can a child sitting on a stationary
playground swing eventually pump herself up to a wide arc of swing,
sometimes almost high enough to loop-the-loop, and all without
touching her feet to the ground?
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  #3  
Old November 16th 11, 05:26 PM
klacc klacc is offline
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Quote:
Originally Posted by prince8585 View Post
hello friends,
how the heck can a child sitting on a stationary
playground swing eventually pump herself up to a wide arc of swing,
sometimes almost high enough to loop-the-loop, and all without
touching her feet to the ground?
It would take longer without touching the ground but it is possible. You move your weight to get moving and keep doing it as you gain momentum.
  #4  
Old March 24th 12, 05:47 AM
lipsyzipsy lipsyzipsy is offline
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Quote:
Originally Posted by prince8585 View Post
hello friends,
how the heck can a child sitting on a stationary
playground swing eventually pump herself up to a wide arc of swing,
sometimes almost high enough to loop-the-loop, and all without
touching her feet to the ground?
What are you talking about? Nevermind, this is too old thread to handle or answer.

Cheers
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  #5  
Old April 26th 12, 09:09 PM
The Baron The Baron is offline
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Great site. Now for those people doing weight training they would normally work up to 10 reps for building muscle size, why not do that for the abdominals. The only thing that stops one doing that is the strain it puts on the lower back when asking the abdominals to move such a greater load ie doing the abs to failure. There is also a fantastic debate about this on www.tbpt.co.uk join in the debate. Very informative. Also is it better to train each muscle differently each time therefore achieving the muscle stiffness the next day or is it better to change it up every 5 weeks or so and trying the basic one rep more technique. Interesting.
  #6  
Old April 26th 12, 09:11 PM
The Baron The Baron is offline
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Quote:
Originally Posted by prince8585 View Post
hello friends,
how the heck can a child sitting on a stationary
playground swing eventually pump herself up to a wide arc of swing,
sometimes almost high enough to loop-the-loop, and all without
touching her feet to the ground?
momentum, another discussion i found on www.tbpt.co.uk the swing upwards leaning back, pointing the feet into the air, oh okay I can't explain it well enough to satisfy me
  #7  
Old August 22nd 14, 12:14 AM
Elvira18 Elvira18 is offline
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thank you so much its really helped
 




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