Could I get a second pair of eyes on this?

  • Thread starter dangerboyy
  • Start date
  • #1
OP warned about not using the homework template
1. Link to problem and the answer I got - https://ibb.co/ncGfDA

2. I got an answer, but I was wondering if this is correct or not? Am I correct to say (in part c) that the vertical component of the hinge's force will be equal to the sum of the vertical forces being exerted in the negative direction?


3. I attempted my answer (hopefully finished) in the link above
 
Last edited:

Answers and Replies

  • #2
SammyS
Staff Emeritus
Science Advisor
Homework Helper
Gold Member
11,359
1,032
Link to full question and my answer at the bottom of text

I got an answer, but I was wondering if this is correct or not? Am I correct to say (in part c) that the vertical component of the hinge's force will be equal to the sum of the vertical forces being exerted in the negative direction?


https://ibb.co/ncGf DA
Hello @dangerboyy . :welcome:

Please use the homework template provided when you open a Thread.

For reference:
image.jpg
 

Attachments

  • Like
Likes dangerboyy
  • #3
Hello @dangerboyy . :welcome:

Please use the homework template provided when you open a Thread.
Sorry, I'll keep this in mind. I'm a newby here who didn't pay enough attention to how to do the template, simply hoping my text would suffice.

edit - post is now in the proper template i believe
 

Attachments

  • #4
TSny
Homework Helper
Gold Member
12,966
3,322

Am I correct to say (in part c) that the vertical component of the hinge's force will be equal to the sum of the vertical forces being exerted in the negative direction?
Not quite. Wouldn't you need to include the vertical component of FT in your calculation of (FH)y?
 
  • Like
Likes dangerboyy
  • #5
Not quite. Wouldn't you need to include the vertical component of FT in your calculation of (FH)y?
That's what I was thinking, but I wasn't exactly sure how to get an answer if I did so. May I request guidance?
 
  • #6
TSny
Homework Helper
Gold Member
12,966
3,322
The system is in static equilibrium. So, what can you say about ΣFx and ΣFy?
 
  • Like
Likes dangerboyy
  • #7
The system is in static equilibrium. So, what can you say about ΣFx and ΣFy?
Well, ΣFx and ΣFy must both equal 0 in static equilibrium. How could I separate Fy in the positive direction among the cord and hinge?

edit - a light bulb turned on in my brain - Could I find Fy of the cord, then subtract from the total Fy in the positive direction to find that of the hinge?
 
  • #8
950
418
That's what I was thinking, but I wasn't exactly sure how to get an answer if I did so. May I request guidance?
You’ve done everything correctly except when you balanced the vertical forces you forgot to include the tension. In exactly the same way you included Ft cos(30) in the horizontal forces add the vertical component into to equation with the vertical forces. It’s just one more term, and you already know the value.
 
  • Like
Likes dangerboyy
  • #9
You’ve done everything correctly except when you balanced the vertical forces you forgot to include the tension. In exactly the same way you included Ft cos(30) in the horizontal forces add the vertical component into to equation with the vertical forces. It’s just one more term, and you already know the value.
Thanks! I believe I have this well understood now. Thanks to all others who helped me look past my stupidity as well. I'm brand new to this community, and this was a great first experience. Thanks
 
  • #10
TSny
Homework Helper
Gold Member
12,966
3,322
Thanks! I believe I have this well understood now. Thanks to all others who helped me look past my stupidity as well. I'm brand new to this community, and this was a great first experience. Thanks
OK. Great! Welcome to PhysicsForums.
 
  • Like
Likes dangerboyy

Related Threads on Could I get a second pair of eyes on this?

Replies
8
Views
2K
Replies
0
Views
3K
Replies
7
Views
2K
  • Last Post
Replies
3
Views
2K
  • Last Post
Replies
2
Views
578
  • Last Post
Replies
5
Views
1K
  • Last Post
Replies
1
Views
855
Replies
1
Views
1K
Replies
1
Views
2K
Top