Help solving a torque problem

|-----------/|
|.......... / ...|
|......../.......|
| ... /..........|
|../ ...........M

The mass (M) is 430kg and is hanging from a rope (second vertical line). The distance between the anchor points is 1.9m (the length of the first vertical line) and the horizontal support cable (horizontal line) is 2.5m long. The uniform beam has a mass of 85kg (the diagonal line) and if the mass of the cable can be ignored, find T the tension force in the cable and the force of the hinge on the beam. (dots are insignificant just typed them to avoid the reformatting of the diagram once submitted).

Can anyone show me how to solve this, I have no idea where to start since we only had three classes on torques and I missed two.
 
torque is equal to rXF where r is the distance from the point and f is the force acting at that distance. it should be known that only the force acting perpendicular to the distance affects torque hence the cross product. in the problem you have you have 2 downward masses(one at the center of mass for the beam and the other at the end of the beam) so you find the torques of these and counteract them with the torque created by the tension of the cable
 

The Physics Forums Way

We Value Quality
• Topics based on mainstream science
• Proper English grammar and spelling
We Value Civility
• Positive and compassionate attitudes
• Patience while debating
We Value Productivity
• Disciplined to remain on-topic
• Recognition of own weaknesses
• Solo and co-op problem solving
Top