Recent content by izemabdo

no sir, this relation doesn't allowed to find A directly...A isn't single...but if you have the form of A (for example A=a(r)u) u can find it

sorry for this language accent, but i used to speak french well

no sign - the primitive of -1/r² are 1/r !

yes, true but according to this question maybe he or she want to understand how can make to an object motion around the earth...is in it?,

we conventionaly take this constant equal 0 constant=0 due to this even r--->infinity; U=0 or U=GMm/r +constant ...r-->infiity we conclude constant=0

ohhhhh sorry i confound this with electrostatic...soorry again i decline

typo?

sorry i don't got you??

come on ! in space the formula of potential energy is (+or -)GMm/r where +or - depends on force's nature ie(is it attractive or repulsive) there is 2 cases first if that radius r---> infini ie distance between object and planet are so important U--->0 potential energy will decreased else r...

great, in reality all physics are approximations...& pereptuel motion in reallity doesn't exist but according to our approximations we expect the possible motion.

gabbagabbahey ,right but don't forget other forces applied by other planets...in space there is a solar system ..

HI! to request this (PHYSIO) look...there s no perepetual motion as you expected..but all depend on launching speed...so we got three cases first in this speed are weak it can undergo a free fall second if this, are so important , the object in space will search an equilibre position due to...