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Just Chat! / Re: Excuse me
« on: 14/03/2020 14:24:07 »
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New Theories / Re: How does a massive human body stand on feet weak toes ?
« on: 27/01/2020 22:20:05 »Are you aware that rock climbers are able to support themselves using just their fingers?Can you do that ? but every person can stand on toes.
https://www.liveabout.com/six-basic-finger-grips-face-climbing-755397
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New Theories / Re: How does a massive human body stand on feet weak toes ?
« on: 27/01/2020 20:52:55 »So, as usual, there doesn't seem to be a problem to solve.There is a difference between putting a load on toes tips, putting the load on toes, and and putting it on feet balls . A human can stand on toes tips, toes , or a compilation of toes and feet balls .I can stand on my toes only with ease. But if the person on the link put the loads on toes only " and without wearing shoes " they will break joints.
Ballet dancers stand on the toes, but they have reinforced shoes to support them.Of course they need shoes to stand on toes tips since the force I suggested is small but not zero also giving in consideration the toes tips are sensitive
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New Theories / Re: How does a massive human body stand on feet weak toes ?
« on: 27/01/2020 13:37:22 »To humans only but not to other masses, and I referred to humans only because it is a better example " everyone can test it"So why did you state earlier 'It is biological that this phenomenon appears only to humans.'?It looks like he just makes this up as he goes along and forgets what he wrote earlier. This results in him contradicting himself a lot.
There is no mathematics for this exact part.It is biological that this phenomenon appears only to humans.It is like physiologically human body stop working after death .
The phenomenon related only to gravity on a human body that is the toes won't bear for instance "equivalent to human body " 80 kg mass put on it it.That will press the toes extremely hard.
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New Theories / Re: How does a massive human body stand on feet weak toes ?
« on: 27/01/2020 10:11:13 »Thanks.It is biological that this phenomenon appears only to humans.And several other bipedal species from Tyrannosaurus to chickens. And all quadruped mammals walk on fewer toes than bipeds.
I was going to mention that , but humans is a better example.
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New Theories / Re: How does a massive human body stand on feet weak toes ?
« on: 27/01/2020 07:29:42 »https://www.fitness-superstore.co.uk/powerline-vertical-leg-press.html?gclid=CjwKCAiAjrXxBRAPEiwAiM3DQrBSAdmKH_5N4_o_wf-w1vfX8ryr5KIBf_J6O-dDWZpzO6aI-IEYcxoClZ8QAvD_BwEThis is a person lifting by feet balls and wearing shoes.lifting by toes and without shoes will break toes , causing huge pain and feels high pressure .
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New Theories / Re: How does a massive human body stand on feet weak toes ?
« on: 26/01/2020 17:10:53 »Bones are stronger than concrete.It is not just about breaking bones or tendons.It is a whole collection of factors. The 80 kg mass will cause huge pain, cutting flesh, breaking joints, and above all pressing the toes extremely hard.
On a weight for weight basis tendons are stronger than steel.
Compare standing on concrete and putting 80 kg concrete on ones toes.
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New Theories / Re: How does a massive human body stand on feet weak toes ?
« on: 26/01/2020 07:09:40 »I'm waiting for you to supply the math shows that toes can't bear the weight of the body.There is no mathematics for this exact part.It is biological that this phenomenon appears only to humans.It is like physiologically human body stop working after death .
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New Theories / Re: How does a massive human body stand on feet weak toes ?
« on: 25/01/2020 23:39:30 »Come back when you have some math to support your claims.You might be confused by the repeated paragraphs.I edited it.I mentioned that the forces are related to each other mathematically , which implies simple proportionality.
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New Theories / How does a massive human body stand on feet weak toes ?
« on: 25/01/2020 15:55:02 »
As the title reads, the human massive body is able to stand on weak feet toes, also there will be relatively slight pressure on soles . The explanation is :
Human body mass can be determined by comparing the body with another mass in scale" nothing new here ".The gravity of the human body is its mass times acceleration " nothing change here "
When a person stands on surface. The gravity force of body on a surface is greater than the normal force by the surface upwards .
The gravity force of body appears in a spring on scale by compressing it which shows body mass times acceleration" nothing new". But the force upwards appears on the phenomenon of standing on feet toes.
The pressure on toes or soles is as a result of two equals forces , one is the force of ground upwards and the other is force downwrads taken from the weight” this force is always less than weight”
The values : weight and normal force upwards related to each other mathematically .The massive the body is the force upwards and the force downwards “ weight “ are big
Comparing this with the phenomenon of a person lifting ones’ massive body with weak foot and calf’s muscles when trying to pick a fruit on a tree .The small normal force of earth surface upwards on the body is equal to the force lifting the body, so the force lifting a body is small, far less than force downwards “ weight” https://www.thenakedscientists.com/forum/index.php?topic=78342.0
The phenomenon related only to gravity on a human body that is the toes won't bear for instance "equivalent to human body " 80 kg mass put on it it.That will press the toes extremely hard.
Human body mass can be determined by comparing the body with another mass in scale" nothing new here ".The gravity of the human body is its mass times acceleration " nothing change here "
When a person stands on surface. The gravity force of body on a surface is greater than the normal force by the surface upwards .
The gravity force of body appears in a spring on scale by compressing it which shows body mass times acceleration" nothing new". But the force upwards appears on the phenomenon of standing on feet toes.
The pressure on toes or soles is as a result of two equals forces , one is the force of ground upwards and the other is force downwrads taken from the weight” this force is always less than weight”
The values : weight and normal force upwards related to each other mathematically .The massive the body is the force upwards and the force downwards “ weight “ are big
Comparing this with the phenomenon of a person lifting ones’ massive body with weak foot and calf’s muscles when trying to pick a fruit on a tree .The small normal force of earth surface upwards on the body is equal to the force lifting the body, so the force lifting a body is small, far less than force downwards “ weight” https://www.thenakedscientists.com/forum/index.php?topic=78342.0
The phenomenon related only to gravity on a human body that is the toes won't bear for instance "equivalent to human body " 80 kg mass put on it it.That will press the toes extremely hard.
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Physics, Astronomy & Cosmology / Re: Is it possible that human body has its own physical laws ?
« on: 13/01/2020 22:51:24 »
Can we build a biological cell ? can we build real biological skin?
Why we can't by any means compose elements to build any cell?
Our body with all its components exists, something exists must be made , why we can't build and explain how the body made? then we don't now the process of building it , and we don't know the laws behind that , right?
Why we can't by any means compose elements to build any cell?
Our body with all its components exists, something exists must be made , why we can't build and explain how the body made? then we don't now the process of building it , and we don't know the laws behind that , right?
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Physics, Astronomy & Cosmology / Re: Is it possible that human body has its own physical laws ?
« on: 13/01/2020 16:54:48 »
Some phenomena are explained by the physics laws and chemistry , vibration of eardrums, eye lenses ..
But what about ?
Nerves signal, perhaps some kind of body electricity.
Body muscles and how they work . body energy connected with muscles.
mechanism of cell division.
But what about ?
Nerves signal, perhaps some kind of body electricity.
Body muscles and how they work . body energy connected with muscles.
mechanism of cell division.
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Physics, Astronomy & Cosmology / Is it possible that human body has its own physical laws ?
« on: 13/01/2020 16:09:29 »
Why does some physical laws related our body differ ?
https://www.thenakedscientists.com/forum/index.php?topic=78342.20
Does that mean the body have its own physics that governed by different laws and explains different phenomena of the body and theses laws connected to each other in a way that the body has its own physics? The eye , nerves, the brain , cells, etc.
https://www.thenakedscientists.com/forum/index.php?topic=78342.20
Does that mean the body have its own physics that governed by different laws and explains different phenomena of the body and theses laws connected to each other in a way that the body has its own physics? The eye , nerves, the brain , cells, etc.
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Physics, Astronomy & Cosmology / Re: Can a mass be lifted with force less than its weight?
« on: 11/01/2020 09:06:59 »
will a person climbing a ladder and falling on a generator turbine generate energy from nothing?
What I think is input biological body energy exerted will be equal to the output energy represented by the body weight,and that regardless of the calculations of muscles force and body mass, so energy is conserved
What I think is input biological body energy exerted will be equal to the output energy represented by the body weight,and that regardless of the calculations of muscles force and body mass, so energy is conserved
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Physics, Astronomy & Cosmology / Re: Can a mass be lifted with force less than its weight?
« on: 03/01/2020 07:30:26 »It doesn't need to because getting out of a chair isn't akin to the scenario you calculated.Actually , the example doesn't involve body sitting or standing. Reply #16
If I'm sitting in a chair and trying to get into a standing position, the fulcrum would be at the knee instead. Or at least one of the fulcrums would be. Standing up uses many joints and many points of force application. A calculation assuming a simple lever breaks down because of that. You would need to calculate the forces acting along all of the relevant points of the body.
You stated in your calculation that you put the fulcrum at the feetThe calculation is considering the fulcrum to be at the toes
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Physics, Astronomy & Cosmology / Re: Can a mass be lifted with force less than its weight?
« on: 03/01/2020 05:56:33 »The muscles in your feet do not lift you own their own. Your leg muscles are involved.Right , the force involves my legs force , but do you think the force of feet and legs pressing equal 588 Newton ? or even close to it? you can just press your feet and find out how weak it is .
Your calculation for that wasn't even sensible. People don't stand up by using their feet like that.I presented specific example , which turned out to be very sensible.
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Physics, Astronomy & Cosmology / Re: Can a mass be lifted with force less than its weight?
« on: 02/01/2020 23:25:02 »I'm not talking about legs I'm talking about feet which is used to carry up a person as I mentioned , The force which should lift a person by his feet is 588 Newton , do you think the feet will provide such force when presses .?
An average man can leg press more than his own weight. That doesn't even take into consideration the other muscles, like those in your core and back, that help with standing up.
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Physics, Astronomy & Cosmology / Re: Can a mass be lifted with force less than its weight?
« on: 02/01/2020 22:59:05 »
A thing could be noticed is the inertia of one's body seems far less than actual body mass inertia, so walking is easy , in fact all movements of a body are effortless , moving any part of the body is easy compared to the body mass, a person feels like his body is lighter than mass of the body.
Is it possible for person to carry 70 kg rock and run ? I don't think an an average person who is not bodybuilding will even be able to lift a 70 kg weight .So how we even carry our bodies?
Is it possible for person to carry 70 kg rock and run ? I don't think an an average person who is not bodybuilding will even be able to lift a 70 kg weight .So how we even carry our bodies?
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Physics, Astronomy & Cosmology / Re: Can a mass be lifted with force less than its weight?
« on: 02/01/2020 18:08:08 »The distribution of mass is different and the muscle groups engaged are also different. Have you heard of the concept of leverage? https://en.wikipedia.org/wiki/Lever#Force_and_levers If you consider your legs to be levers and the load is placed at your feet, then that is the worst possible place to put the weight in terms of lifting difficulty. If you put the load on your knees or thighs, it would be easier to lift despite having exactly the same mass.
I can lift my 60 kg body with only my weak feet muscles when trying to pick a fruit on a tree.
Let's for the example above the foot is 30 cm or 0.3 meters, Now let's calculate for a 0.3 lever:
First the lever will be class 3 :
https://www.school-for-champions.com/machines/levers_classess.htm#.Xg4lp99fiM8
The weight for 60 kg will be 60*9.8=588 Newtons the lever in this case is class 3:
The force of my feet is distributed along the feet , from both toes to both heel .Let’s the muscles force is focused on the heel which is the maximum force of muscles could be.
Class 3 is the fulcrum at the toes , and in this case both the weight of my body and the force of my feet will be exactly at the heel:
F: force of my weight
f: force of muscles strength
L: the distance of the weight from the heel to the toes.
l: distance of the muscles force from the heel to the toes.
f * l=FL
F=588 and L=l =0.3
f*0.3=588*0.3
f=588 Newton
The muscles force to lift 60 kg according to current physics and the lever idea must be 588 Newtons
The muscles force actually is far less than 588 Newton but it lift the body .