Solving 3D Statics Problem with 800N Lamp

  • Thread starter Thread starter believe14142
  • Start date Start date
  • Tags Tags
    3d Statics
AI Thread Summary
To solve the 3D statics problem involving an 800N lamp supported by three cables, it's essential to apply equilibrium equations for the forces in the x, y, and z axes. The challenge arises from the lamp's position not being centered at the origin, complicating the determination of force angles. A helpful approach is to visualize the scenario with a sketch and consider translating the forces to simplify calculations. Once the forces are adjusted to the origin, the problem becomes more manageable. Understanding these concepts is crucial for accurately determining the forces in each supporting cable.
believe14142
Messages
2
Reaction score
0

Homework Statement



Three cables are used to support a lamp that weighs 800N. Determine the force in each supporting cable when everything is at equilibrium.


Homework Equations



ƩF in the x-axis = 0
ƩF in the y-axis = 0
ƩF in the z-axis = 0

The Attempt at a Solution



I really don't know how to start this problem. I get the concept of breaking up the components and adding all the forces up in each axis. But what throws me off about this problem is that it isn't centered at the origin. How am I supposed to find the angles of the forces with respect to an axis if the force isn't coming out of the origin?https://mail-attachment.googleusercontent.com/attachment/u/0/?ui=2&ik=dbdf3b9707&view=att&th=13a219c1fc5c23ec&attid=0.1&disp=inline&realattid=f_h7t12d950&safe=1&zw&saduie=AG9B_P-8Wo1xJnmuljT9i03--InW&sadet=1349183678622&sads=Kf9SObn1yzuJjVHHS6SmBxLnTK0&sadssc=1
 
Physics news on Phys.org
A sketch of the situation would be helpful.
 
Oh pffft nevermind. I just realized that you can move the forces over so that everything is at the origin.
 

Thread 'Rolling without slipping on a curved surface'

Kindly see the attached pdf. My attempt to solve it, is in it. I'm wondering if my solution is right. My idea is this: At any point of time, the ball may be assumed to be at an incline which is at an angle of θ(kindly see both the pics in the pdf file). The value of θ will continuously change and so will the value of friction. I'm not able to figure out, why my solution is wrong, if it is wrong .
View full post »

Thread 'Struggling to understand the concept of this question (ice cube in water optics question)'

TL;DR Summary: I came across this question from a Sri Lankan A-level textbook. Question - An ice cube with a length of 10 cm is immersed in water at 0 °C. An observer observes the ice cube from the water, and it seems to be 7.75 cm long. If the refractive index of water is 4/3, find the height of the ice cube immersed in the water. I could not understand how the apparent height of the ice cube in the water depends on the height of the ice cube immersed in the water. Does anyone have an...
View full post »

Similar threads

How Much Force is Needed to Raise a Block on a Frictional Wedge?
Replies
7
Views
4K
Fibonacci Operations: Uncovering Weird Properties
Replies
5
Views
2K
How Can Precision and Setup Influence Metal Rod Mass Measurement Accuracy?
Replies
1
Views
8K
Determining equations for tension in 3D statics problem.
Replies
2
Views
6K
Positioning a Third Mass So That It Experiences No Net Gravitational Force
Replies
22
Views
9K
What Are the Names and Materials of Chainsaw Engine Components?
Replies
5
Views
2K
How do i do this? With picture
Replies
7
Views
2K
What Causes a Circular Hole in Snow on an Attic Skylight?
Replies
2
Views
1K
Is the Free Body Diagram for C-Spanner Screw Failure Analysis Correct?
Replies
1
Views
2K
Equilibrium of a Rod Problem: Find Minimum Distance x
Replies
31
Views
9K

Hot Threads

Recent Insights

Back
Top