Physics 12 Question!

Question

korosh23 · Answer

The answer is right there, just please explain why is it tan 28, and not cos 28? Thank you.

korosh23 · Answer

Also please draw me a free body diagram with the position of folcrum.

anonymous · Answer

I think what they did was divide the sum of the forces in y and x. So
$$\huge \frac{ T_y }{ T_x }=\frac{ \sin(28) }{ \cos(28) }=\tan(28)$$
The F_y and F_x that I put here are the total forces, they are only the components of that particular triangle (due to the cable) acting in those directions.
Then, since they knew T_x they rearranged it so that$$\huge T_y=T_x \tan(28)$$
$T_y$ is the same as $T_\perp$

anonymous · Answer

`I think what they did was divide the sum of the forces in y and x`
Sorry, NOT the sum of the forces, just the components of the tension!

korosh23 · Answer

@CShrix I do not understand why did they do that for? can you explain more?