How can we effect the rigidity of any solid body without an application of external force?

Waiting for response.

FEE AMAN ALLAH

We can effect the rigidity of any solid body without an application of external force with the help of resonant effect?(Not sure)

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Well, as far I know, 'force' is any (visible, invisible, physical or even non-physical) agent which can change the state of rest or motion of a body or at least can try to change the state of rest or motion of that body.

So first of all although there is no physical contact in case of resonence but the existence of 'external' force is still there because there is something (lets say energy of vibrations) which is such an agent which can change the state of rest of another body. So 'external force' exists in this case.

Secondly, my response to original question: "How can we effect the rigidity of any solid body without an application of external force?"

First of all I think we cannot do it because whatever we shall do would be an 'external agent' which would have to be considered to be an 'external force'.

Secondly, we cannot do it but some 'internal force' of that solid body can do it by itself. Such as radioactive decay or any such other 'internal force'.

This is just my attempt to account for the matter. I hope that matter would be more puzzeling. So looking forward for the exact right answer.

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I think by applying "heat" it can be done, because heat is an energy not force

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what is heat? is it not kinetic energy of particals? When more particals per second collide with our particals, we feel heat.

It happens in this way that kinetic energy of particals of heated sorce exerts FORCE on our particals. Our particals get fast motion then before and so we feel heat.

SO FORCE IS THERE.

Remember Newton's 1st law .... any motion cannot be induced to any stationery object without the application of FORCE.

Although I do not believe in this law of motion but I have some different doubt in this law. But I do believe that any motion cannot be induced to any stationery object without the involvement of FORCE.

This force however can be internal or can be external.

Thanks!

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Where is the SIGNATURE....????

@Khuram
dear I think you dont understand the question and also my reply,

the theme of the question is that
"How can we effect the rigidity of any solid body without an application of external force"

so emphasis is on "rigidity"
what is rigidity ?
a condition of hardness, stiffness, or inflexibility

and the question is that you cannot apply external "force"

so what is force ?
physical energy or intensity (F=ma) means force involves mass,time,velocity

and my answer is ""Heat"
Heat is an energy "form of energy that is transferred by a difference in temperature"

by applying heat "regidity" of an object can be affected

actually the question is logical then answer must be logical, and logical answer is heat, because the condition is to effect rigidity and you cannot apply force.

think on it...

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MCS Final Year (Karachi University)

If you want to change the state of rigidity of an object, it obviously would amount to replace its atoms from their current position.

Suppose previously those atoms were at rest. May be because all the forces acting upon them were perfectly balanced.

Atoms are also material objects. And you want to displace them. An object at rest shall always be in the state of rest until and unless it is acted upon by any net positive force.

With the view to displace the atoms you need to disturb their state of rest. How will you disturb the state of rest without applying any force??????

You say you can apply "heat". At molecular or atomic level, heat is nothing but striking of moving atoms with other atoms.

When you strike the moving atoms to the atoms of the original stationery object, whose rigidity you want to distrurb, you are here applying net positive force on the atoms of the original object. As a result of this positive net force, the atoms of that original object shall be displaced and the shape of the original object also shall be changed and the state of the level of its rigidity also shall be changed.

And atoms also possess the characteristics of mass, time, velocity etc.

Since you did not understand my previous post, so I had to just elaborate the previous post. All these things are already pointed out in my previous post.

And the above was for the sake of just argumentation. In real, I do not believe in the basic concepts of Physics such as concept of force, Newton's first and second law etc.

And keeping in view my own understanding of force, motion etc.

THIS IS POSSIBLE EVEN TO CHANGE THE STATE OF REST OF AN ORDINARY MASSIVE OBJECT WITHOUT APPLICATION OF FORCE.

So I do not believe in Newton's first and second law.

And I can talk on it in detail .... but I am need to do some ratta study now bcoz next exam is EDS.

Thanks!

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Where is the SIGNATURE....????

Oh dear khurram I am not talking just for the sake of argument I am just clearring my point of view and nothing else and my point is simple,

you are required to affect rigidity and you are bound not to apply external force, so all we can apply is heat, and heat is not force.

it is obvious that state will change if you the applied heat reaches at that pont at which change state occur. otherwise not

applying electricty can also be considerd.

thats all...

now Mst. Maria please uncover the truth.

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If your actions inspire others to dream more, learn more,
do more and become more, you are a leader
MCS Final Year (Karachi University)

Yes this is true that 'heat' is not 'force'.....

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Where is the SIGNATURE....????

The rigidity of a solid can be changed, without the application of external force, by applying voltage across its ends. This is basically a property exhibited by certain crystals,like Quartz and is known as piezoelectric effect. It originates from the Greek word "piezein" which means to squeeze or press and is the generation of voltage in response to the applied mechanical stress & is reversible.

The deformation produced in this way is very small (about 0.1 % of the original dimensions), of the order of nanometers but find applications in certain phenomena like the detection of sound.


Regards,
angelfalls!!

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