(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A crane is used to lift a concrete pipe weighing 5kN into place.

2. Relevant equations

3. The attempt at a solution

The picture is in my book, but i am certain my problem is in my algebra(i have the layout correct)

T_ac*cos(20)=T_ab*sin(3.58) X direction

5+T_ac*sin(20)=T_ab*cos(3.58) Y direction

I am for some reason drawing a blank when it comes to how i can work this out, i tried solving for T_ac in equation 1 then plugging that into equation 2 but then i am running into an algebraic nightmare. One other problem aswell(its part of the question)

I am given a triangle where Hypotenuse=4m and opposite=.25m, so using A^2+b^2=c^2 i got 3.99 for b. Then i used theta=arccos(adjacent/hypotenuse)=4.05, but for theta=arcsin(opposite/hypotenuse)=3.58. What am i doing wrong?

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# Homework Help: Tension in 2 cables

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