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i know tht much,but thing is,how did u solve to get 4/3..lyk i got 5/3samy said:june 02 quest 21..
use v+v= m/p + m/2p
the volume remain same so solve it n u will get (4/3)p
Ummm...wait! :shock:samy said:nov o2 quest 14..
ok it is supported at the 40 cm mark so v ve to balance it round it...
v ve to balnce both sidex
20 x 60(distance from 40 mark) = 100 x 10(the mass of ruler will be at 50 cox it is uniform)+ 50 x X
1200 = 100+ 50 x X
now luk one is 1200 v have to make the other side 1200 also to make the rule balance so if v multiply 50 with 4 it becumx 200 thus 200 + 1000 it becum 1200 ....
so 4 cm from the 40 mark is 44 !!!
jerry said:Ummm...wait! :shock:samy said:nov o2 quest 14..
ok it is supported at the 40 cm mark so v ve to balance it round it...
v ve to balnce both sidex
20 x 60(distance from 40 mark) = 100 x 10(the mass of ruler will be at 50 cox it is uniform)+ 50 x X
1200 = 100+ 50 x X
now luk one is 1200 v have to make the other side 1200 also to make the rule balance so if v multiply 50 with 4 it becumx 200 thus 200 + 1000 it becum 1200 ....
so 4 cm from the 40 mark is 44 !!!
im still..totally CONFUSED! :? :? :?
i just still dont understand,why did u multiply 50 wid 1200,where did u get 1200 frm?
and how cum this all lead to final answer?
sorry fr nt getting bt cud u plz make it more clearer??
thnks!
oh okayy..thnks..BUT u just say its 2m +m/2p.???samy said:2v= 2m+m/2p
2p= 3m/2v
2x2/3 p = m/v...
4/3 p = m/v..
hence m/v is density so itx the ratio
thank you sooo much!samy said:jerry said:Ummm...wait! :shock:samy said:nov o2 quest 14..
ok it is supported at the 40 cm mark so v ve to balance it round it...
v ve to balnce both sidex
20 x 60(distance from 40 mark) = 100 x 10(the mass of ruler will be at 50 cox it is uniform)+ 50 x X
1200 = 100+ 50 x X
now luk one is 1200 v have to make the other side 1200 also to make the rule balance so if v multiply 50 with 4 it becumx 200 thus 200 + 1000 it becum 1200 ....
so 4 cm from the 40 mark is 44 !!!
im still..totally CONFUSED! :? :? :?
i just still dont understand,why did u multiply 50 wid 1200,where did u get 1200 frm?
and how cum this all lead to final answer?
sorry fr nt getting bt cud u plz make it more clearer??
thnks!
ok luk...ruler k aik side pe 20 g balance hai sae...us 20 g ka moment 20 x 60 = 1200 bunta hai sae.... yeh ho gaya aik side ka balance....
phr its sayin k it is uniform meter rule so itx weight must b at 50 position which is the center...weight is 100 and itx distance from pivot is 10 cm so itx moment is 1000 rite...
now put dese both moments equal cox v ve to balane the ruler the moments should b equal for it...
1200 = 1000...
it meanx itx not balance ...dere is less of 200 N on rite side...
dey ve given us 50g mass....so v ve to find the distnce ..k kitnay distance per v will put 50 g ka mass that will make it balance....
200 is wat v need to balance...
so if v multiply 50 with 4 v get 200....it meanx ager hum pivot sey 4 cm k distance pe lagayen gey it will b balance ..dat is 40 + 4 =44 cm...
now get it??? ..
v cant use 36 because v r balancing it from itx weight side..!!
Ohhh..ya rite!samy said:aray bae i simply made deir same denominator..
is terhan hai na...m/p dis is one...n second is m/2p...
i made denominator 2p...how can it b 3p?
(2m +m) / 2p
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