Calculate the net torque using all the forces

AI Thread Summary
The discussion focuses on calculating the net torque for a uniform beam supported by a cable and hinge at a 40° angle, with a tension of 600 N. The user initially struggled with the torque equation but realized that in equilibrium, the net torque must equal zero. They correctly identified that the torque due to the weight of the beam (mg) and the tension in the cable must balance out. The final solution involved using the formula mg(l/2)sin(theta) - T*lcos(theta) to find the net torque. The problem is deemed straightforward once the correct approach is applied.
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Homework Statement


In the figure below, a uniform beam of length 12.0 m is supported by a horizontal cable and a hinge at angle θ = 40°. The tension in the cable is 600 N.


Homework Equations



T=F x r

The Attempt at a Solution


I attempted to calculate the net torque using all the forces(mg and tension), so 0=mgsin(40) - Tension.
 

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Nevermind got it. Used mg(l of rod/2)sin(theta)-T*lcos(theta)
 
welcome to forum,
that's an easy problem. As the body is equilibrium net torque should be zero.
 

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