1
Akand
·2009-03-03 06:30:09
if c also possible then shudnt k always be 1???
1
skygirl
·2009-03-03 06:32:41
arey wahi toh mera bhi doubt hai !
1
Akand
·2009-03-03 06:34:56
can u show me d working??.......hw to do it??? i dint understand hw 2 introduce k into it.......
106
Asish Mahapatra
·2009-03-03 06:39:23
akand ..
(a) relative vel after coll. = z2-z1 = v2 (here)
rel vel before coll. = c2-c1 = v1 (here)
newtons law of restitution. is (z2-z1)=e(c1-c2)
==> v2=-ev1
if elastic then e=1 so v2=-v1
v1=-v2/e as e≤1 so 1/e ≥1 so it is -kv2 where k≥1
so (b) and (d) (a) can be correct if only mag. is asked but never c...
1
skygirl
·2009-03-03 06:40:50
never C right... ??
i also thot... but jus thot may b i am doind a stupid mistake..
anyways thanx for the confirmation :)
1
Akand
·2009-03-03 06:44:02
ok i took rel vel b4 coll as v1=c1+c2.........i thought they wer movin 2wards each other so it wud add up.......