Insights Blog
-- Browse All Articles --
Physics Articles
Physics Tutorials
Physics Guides
Physics FAQ
Math Articles
Math Tutorials
Math Guides
Math FAQ
Education Articles
Education Guides
Bio/Chem Articles
Technology Guides
Computer Science Tutorials
Forums
Intro Physics Homework Help
Advanced Physics Homework Help
Precalculus Homework Help
Calculus Homework Help
Bio/Chem Homework Help
Engineering Homework Help
Trending
Featured Threads
Log in
Register
What's new
Search
Search
Search titles only
By:
Intro Physics Homework Help
Advanced Physics Homework Help
Precalculus Homework Help
Calculus Homework Help
Bio/Chem Homework Help
Engineering Homework Help
Menu
Log in
Register
Navigation
More options
Contact us
Close Menu
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Forums
Homework Help
Introductory Physics Homework Help
How can I find the length of this pole?
Reply to thread
Message
[QUOTE="GaussianSurface, post: 5850864"] [h2]Homework Statement [/h2] A pole BC is supported by the cable AB as is shown in the figure. If the magnitude of the force applied on the point B is 70 lb, and the moment of this force about the x-axis is -763 lb ft, determine the pole lenght. I'LL ATTACH AN IMAGE SO YOU CAN SEE IT. [h2]Homework Equations[/h2] τ= torque or moment of force τ= r X F Tτ= T1+T2 Tτ=(r1 + r2) x F [h2]The Attempt at a Solution[/h2] I don't know how to compute the lenght, I was thinking about it maybe was related with the torque or moment of force (let me know if this is true). What I tried to do was this: r1= 4i + 6k e= 4i+6k e=√4^2+6^2 e=√52 e=4/√52 + 6/√52 F= 70(4/√52 + 6/√52) = 38.82i+58.24k and by performing the determinant τ= -0.04 lb/ft So far I should've got the T1 and now I'd do the same but this time with other vectors ⇒ 4i-6k I don't think it's correct since I got a result on differents units that don't measure the lenght. PLEASE TRY TO TELL WHAT I'M WRONG AND WHAT I'M RIGHT. [/QUOTE]
Insert quotes…
Post reply
Forums
Homework Help
Introductory Physics Homework Help
How can I find the length of this pole?
Back
Top