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
Calculating Spring Constant and Mechanical Energy
Reply to thread
Message
[QUOTE="xCharade, post: 4545050, member: 491674"] [h2]Homework Statement [/h2] When a .5kg mass is suspended from a spring, the spring stretches 4cm. The mass is then displaced 2cm from its equilibrium position and released. (a) What is the spring constant? (b) What is the mechanical energy of the mass? (c) What is the speed of the mass as it passes through its equilibrium position going down and going up? [h2]Homework Equations[/h2] F=kx (k is spring constant) W= .5(k)x[SUP]2[/SUP] KE= .5mv[SUP]2[/SUP] [h2]The Attempt at a Solution[/h2] For part A I used F=kx: mg=kx (.5kg)(9.8m/s[SUP]2[/SUP]) = k (.04m) k= 122.5N/m For part B I used W= .5kx[SUP]2[/SUP]: W= .5(122.5N/m)(.02m)[SUP]2[/SUP] W= .025J For part C I used KE = .5mv[SUP]2[/SUP] .025J = .5(.5kg)v[SUP]2[/SUP] v= .32m/s I just need to make sure that I'm on the right track with this problem. I can get confused as to when to use .04m and .02 and generally with using formulas. [/QUOTE]
Insert quotes…
Post reply
Forums
Homework Help
Introductory Physics Homework Help
Calculating Spring Constant and Mechanical Energy
Back
Top