[logic123]

Stuck on this question

http://www.thepaperbank.co.uk/papers...20Jan%2002.pdf

[victoria13]

which question?

[corney91]

Which one?

[logic123]

4 a pls

[victoria13]

you have to find the mass of the triangle and its centre, then the square and its centre, and then subtract them from each other using SIGMA Mxbar = SIGMA mixi

[logic123]

done that still dont get the answeer i did
(48x8/3)+(4x2)=44xX stilldont gert the answeer.

[logic123]

any offerds.

[victoria13]

you need to take them away cos you are cutting out the square

[logic123]

i did take them away though 48-4=44

[maximilianchamberlin]

(8a/3 *1/2*12a*8a)-(4a*4a^2)/(12a*8a-4a^2)
sum of AiXi/sumai

[Green Clover]

Originally Posted by logic123

done that still dont get the answeer i did
(48x8/3)+(4x2)=44xX stilldont gert the answeer.

Shouldn't that be "Total mass = Sum of separate masses"? You are adding the wrong quantities

Spoiler:

[logic123]

green clover im not sure what you mean

[victoria13]

Originally Posted by logic123

done that still dont get the answeer i did
(48x8/3)+(4x2)=44xX stilldont gert the answeer.

no it should be (48x8/3)-(4x2)=44xX

[maximilianchamberlin]

(8a/3 *1/2*12a*8a)-(2a*4a^2)/(12a*8a-2a^2) sorry made mistake

[Green Clover]

- For total mass before the square was removed:
- For separate masses:
The square:
The template:
Use these to form an equation and remember to put them on the right side
If you still can't get it look at the spoiler in my post above.