[ARPAN]

thanks for ur valuable suggestions. in due course of time i will present my views on force and change in momentum concept and Einstein mass energy equivalence..

at present, lets ponder over the validity of F=m.a
as u know , it seems not to hold true in case of non-inertial frame of reference i.e. accelerating frame with respect to earth, so can u propose an extension of this equation..

last time, i asked you about the relevance of F=m.a
remember that this very equation relates almost all forces of nature and the acceleration generated from it. it is, in terms of physics the very definition of force.

gravitational force= gmM/R.R
electrostatic force=kqQ/r.r
and so on.... all forces can be related to it...think!!!

question 2.

this Question may seem out of context but nevertheless it is within the domain of physics
CASE-1
consider a blown balloon. make a hole in it. it will shrink immediately with a possible sound.


CASE-2
now make a hole in the balloon first and then start blowing till it attains a considerable size. secure the balloon at the mouth. u can detect the air inside escaping from the hole but at a much slower rate than in the first case.

now the BIG question WHY IS IT SO ????