Static Equilibrium Problem involving Moments

Join the discussion
Ask a follow-up here, or get your own question answered by working scientists, mathematicians and engineers — people, not an autocomplete.
Real named experts · corrections over time · the nuance an AI answer skips
4 replies · 4K views
Anil Radhakrishnan
Messages
3
Reaction score
0
Capture.PNG

Equations: Net torque=0=Net force
I believe this is a static equilibrium question but can't figure out how to do it
 
Physics news on Phys.org
The net force on the x-axis must be zero. What equation can you make from this fact?

Also the net torque is zero. Take the torques around the A point. What equation can you make?

Solving these two equations with two unknowns (F_x and the force from cable ) will get you the result.
 
  • Like
Likes   Reactions: Anil Radhakrishnan
New%20Doc%2014_1.jpg

this is what i have split the forces as till now,
somehow i can't get them to cancel
 
You get involved with the forces along the line of the 80Kg rod, that's not what you should do, the x-axis is not the line of the 80Kg rod, the first picture at OP shows which are the x -axis and the y-axis.

In the y-axis you got the weights of the rod and the mass m, 80Kg and 10Kg respectively (and the F_y component of the force from wall at A).
In the x-axis you got F_x and the tension T from the cable.
 
Delta² said:
You get involved with the forces along the line of the 80Kg rod, that's not what you should do, the x-axis is not the line of the 80Kg rod, the first picture at OP shows which are the x -axis and the y-axis.

In the y-axis you got the weights of the rod and the mass m, 80Kg and 10Kg respectively (and the F_y component of the force from wall at A).
In the x-axis you got F_x and the tension T from the cable.
ah got it thank you