- #1
PierceJ
- 45
- 0
Homework Statement
Homework Equations
I do not know exactly.
The Attempt at a Solution
I honestly have no idea how to approach this.
Gravity and the Tension in the wireDo you know what the forces acting upon the beam are?
You can get the angle from trig, but you have assumed incorrectly that the beam's weight acts at the free of the beam.PierceJ said:I don't understand why I don't need the angle. Can I get a little more help than just this?
You were right the first time. You almost never need to find the angle, as such. Only cos and sin of the angle are needed, and these can be found directly from the linear dimensions.axmls said:you need the angle in order to determine the x- and y- components of the tension force.
Since the reaction at the hinge and the horizontal component of the tension all act through the hinge, they produce no moment about the hinge. But they must be taken into account in ##\Sigma F_x## and ##\Sigma F_y##.PierceJ said:But I just used those and got the right answer?
In order to determine the unknown equations in a suspended beam problem, you need to set up a system of equations using the given information and the equilibrium conditions for the beam. This typically involves using the sum of forces and sum of moments equations.
The most common assumptions made when solving a suspended beam problem include assuming the beam is in static equilibrium, neglecting the weight of the beam itself, and assuming the beam is rigid and does not deform under loads.
The reactions at the supports of a suspended beam can be found by applying the equilibrium conditions at each support. This usually involves taking the sum of forces and moments in the vertical and horizontal directions at each support and setting them equal to zero.
Some common mistakes to avoid when solving a suspended beam problem include forgetting to include the weight of the beam, using incorrect units, and not considering all external forces acting on the beam. It is also important to carefully label and keep track of all variables and equations used.
No, the approach to solving suspended beam problems may vary depending on the specific problem and the given information. It is important to carefully read and analyze the problem before determining the appropriate equations and assumptions to use.