How do I solve this?

Question

anonymous · Answer

attachment

anonymous · Answer

@skullpatrol

anonymous · Answer

@Somy

anonymous · Answer

help

somy · Answer

umm im not really good with this but

somy · Answer

since weight is downwards due to gravity, u draw a line representing it

somy · Answer

can u solve it now?

anonymous · Answer

yea I think so...so I use sin?

somy · Answer

since ur weight acts downwards by drawing a line downwards u'll see 2 right angled triangles, since both angles are same, u can use whichever triangle u want 
then use sin or cos or tan 
whichever that is suited

somy · Answer

yea) u need to use sin

anonymous · Answer

lol aaaand I got my answer wrong

somy · Answer

owh then i don't know lol physics is my weak point :) what is the answer supposed to be?

anonymous · Answer

No no 
Np thank you for trying! :)

somy · Answer

im still kinda sad, coz that's bad that i wasn't able to do it coz i have exams comin up(

mrnood · Answer

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You need to cosider BOTH tensions

anonymous · Answer

Oooh so do I find the sin of two triangles?

somy · Answer

do we use sin rule? @MrNood

somy · Answer

since we have 2 angles but 1 side its best to use sin rule right?

mrnood · Answer

The downward component of One tension T = Tsin(25)

The sum of the 2 (EQUAL) tensions (downwords) = reaction force (upward)

anonymous · Answer

I don't get you sir TT_TT

mrnood · Answer

I draw the diagram for the supporting nail - but another way to look at it is for the picture itself
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anonymous · Answer

Oooooh ok so now what we do?

mrnood · Answer

The upward acting forces must be equal to the downward force.

So 
What is the upward acting component of 1 tension?

anonymous · Answer

it's the two tension right?

anonymous · Answer

@MrNood ?

mrnood · Answer

Yes - but they are both the same

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