Qualification > Math

m1 urgent doubt :/

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sweetest angel:

--- Quote from: Phosu on March 28, 2010, 05:26:43 pm ---b part, add the 2 vector forces to give the resultant force

the resultant force vector is parallel to the (i-2j) vector, hence gradient will be same
formula is i1/i2 = j1/j2

Ri /i = Rj /-2

4+p/1= q-5/-2

cross multiply to get

--- End quote ---

no i didnt get it :/...why did u divide them by the vector that they are parallel to?

lol haloosh evryone is sayin dat :P

halosh92:

--- Quote from: sweetest angel on March 28, 2010, 05:44:31 pm ---no i didnt get it :/...why did u divide them by the vector that they are parallel to?

lol haloosh evryone is sayin dat :P

--- End quote ---

i didnt get it either poshuuuuuuuuuuuuuu expalin
or someone god dammit
where did u get this question from alooa???

Amr Fouad:
2 MINUTES..

Phosu:
it says the R is parallel to (i-2j)
that means gradients will be equal.

how do we get the gradient from a coordinate
y/x right?

so whats the gradient for R vector

q-5/4+p

now m for (i-2j)  note:- i is also equal to 1i which is 1
so the gradient for this will be, -2/1

equate the gradients
q-5/4+p = -2/1

so you get, q-5= -2(4+p)

yay i feel so smart! :D

Amr Fouad:
Her You Go..

Hope that helps..

  :D

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