Moments -- Rods & weights welded together & hanging at an angle

  • Thread starter Thread starter nazz
  • Start date Start date
  • Tags Tags
    Angle Moments
AI Thread Summary
The discussion focuses on the equilibrium of two welded rods hanging at an angle, with an emphasis on analyzing the forces and moments involved. The user seeks validation of their force diagram, questioning whether it accurately represents the system's dynamics. A key point raised is that the center of mass of rod BC must be positioned correctly to ensure the overall center of mass of the combined rods is directly below the hinge point A. The conversation highlights the importance of correctly identifying the forces acting on the rods, including gravitational forces and the need for a precise force diagram. Understanding these elements is crucial for determining the angle that rod AB makes with the vertical.
nazz
Messages
8
Reaction score
0
2 uniform roods each or weight W and length L are welded together so that angel ABC is 90, the two rods are hanging in equilibrium from a fixed loin at A by a hinge which allows the rods to swing in a vertical plane. by taking the moments about the hinge find the angle that AB makes with the vertical.

Question is my force diagram correct or what are the forces involved besides weights ?

please have a look at my force diagram, attached image
 

Attachments

  • photo.jpg
    photo.jpg
    25.4 KB · Views: 535
Physics news on Phys.org
Your diagram is drawn as though the centre of mass of rod BC is vertically below A. That will not be the case.
 
so what is right force diagram ?
 
nazz said:
so what is right force diagram ?
Rod AB has a centre of mass to the right of A. Where does the centre of mass of BC need to be for the centre of mass of ABC to be directly below A?
 
Thread 'Collision of a bullet on a rod-string system: query'

Thread 'Collision of a bullet on a rod-string system: query'

In this question, I have a question. I am NOT trying to solve it, but it is just a conceptual question. Consider the point on the rod, which connects the string and the rod. My question: just before and after the collision, is ANGULAR momentum CONSERVED about this point? Lets call the point which connects the string and rod as P. Why am I asking this? : it is clear from the scenario that the point of concern, which connects the string and the rod, moves in a circular path due to the string...
View full post »
Thread 'A cylinder connected to a hanged mass'

Thread 'A cylinder connected to a hanged mass'

Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
View full post »

Similar threads

To find the angle between the ground and rods in limiting friction
Replies
5
Views
2K
To find the distance of a horizontally suspended rod from a ceiling
Replies
2
Views
1K
To calculate the forces on a composite body
Replies
2
Views
1K
Moments - Support forces acting on a rod
Replies
11
Views
3K
To locate the centre of gravity of a rod
Replies
5
Views
2K
To find the modulus of elasticity of a light elastic string
Replies
7
Views
2K
Finding the net elongation in a rod due to its own weight
Replies
13
Views
3K
Force on a hinge when a rod is being released
Replies
11
Views
4K
Moments & Pivots: Find Force T for Level Board
Replies
9
Views
2K
To find the weight of a hemisphere
Replies
13
Views
2K

Hot Threads

Recent Insights

Back
Top