IIT JEE , AIEEE Forum - Physics , Mechanics

alokmittal

if compress a spring and tie it with some thin thread so that rhe thread do not loosen.then we put the spring in acid so that after some time the spring and thread completely dissolve in the acid.

then what happened to the potential energy stored in the spring?

sss

in real situation there is only one type of energy i.e.kinetic energy.we talk of 2 types of energies in mechanics-kinetic energy and potential energy but potential energy is not a real energy.we know, change in k.e.=work done by all forces.here all includes work done by conservative forces also.delta k.e.=w(conservative)+w(non-con.).we can also write delta k.e.-w(con.)=w(non.con.).this term i.e. -w(con.) is termed as potential energy.this is energy made by us,not nature.work-energy theorem also defines only 1 type of energy i.e.kinetic energy.

alokmittal

please give me suitable answer soooooooooooooooon

kghedriu

The potential energy turns into the required solvation energy.The entire description is contained in this sentence.

bumba

as the spring and the thread is immersed in the acid it experiences an upthrust.this decreases the compression of the spring and ultimately,the spring tends to gain natural length.so,the thread breaks down and the springs gains finally,the natural length and then it dissolves.

vash

the energy stored will result in increase in the temperature of the acid. since the molecules are under tension, they will vibrate continuously. when the spring dissolves, the vibration is passed on to the water molecules and thereby increasing the temperature.

bumba

the potential energy may increase the K.E of the chemical molecules

bumba

hey!!!alok kindly please see if my ans is correct or wrong.if wrong,please utter the correct ans.....

alokmittal

i agree with vash.

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