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

A mass of 50kg is hung from the end of a cantilever 3m long. The cantilever weighs 6kg and is supported by a cable from the wall that is attached 0.5m from the end of the cantilever forming a 30 degree angle with the cantilever.

What is the tension in the wire?

What is the vertical and horizontal components of the force exerted by the wall on the shelf?

heres a picture i drew http://screencast.com/t/YjM4MmQ4M2Yt

it says 30 degrees, 2.5m, 0.5m and 50kg in case u can't read it

not pictured is the weight of the cantilever 0.6kg.

2. Relevant equations

torque = force * radius

3. The attempt at a solution

i'm very lost on this one.

my guess that clockwise torque would be = 60 * 1.5 + 500* 3 = 1590 (what is the units for torque?)

So this would mean that the ropes vertical component is 1590 right?

this gives a tension of 3180 ( =1590/sin(30) )

however the answers say the answer is 1300

which i have no idea how

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# Homework Help: Torque on cantilever

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