| Topic: |
Science > Physics |
| User: |
"oli_collins" |
| Date: |
28 Jan 2004 02:02:00 PM |
| Object: |
force constant |
does the force constant of a spring vary when you cange the mass. iv
got to Measure the force constant of a spring using oscillations and
im using the equation T = 2pie(m/k). can ny1
help[/quote]
----== Posted via Newsfeed.Com - Unlimited-Uncensored-Secure Usenet News==----
http://www.newsfeed.com The #1 Newsgroup Service in the World! >100,000 Newsgroups
---= 19 East/West-Coast Specialized Servers - Total Privacy via Encryption =---
.
|
|
| User: "Franz Heymann" |
|
| Title: Re: force constant |
29 Jan 2004 03:45:45 PM |
|
|
"oli_collins" <oli_collins@hotmail-dot-com.no-spam.invalid> wrote in message
news:40181538$1_1@127.0.0.1...
does the force constant of a spring vary when you cange the mass. iv
got to Measure the force constant of a spring using oscillations and
im using the equation T = 2pie(m/k). can ny1
help[/quote]
If you do not exceed the elastic limits of the spring, the force constant
does not change. Read all about Hooke's Law.
Franz
.
|
|
|
|
| User: "Mark Folsom" |
|
| Title: Re: force constant |
28 Jan 2004 03:06:32 PM |
|
|
"oli_collins" <oli_collins@hotmail-dot-com.no-spam.invalid> wrote in message
news:40181538$1_1@127.0.0.1...
does the force constant of a spring vary when you cange the mass. iv
got to Measure the force constant of a spring using oscillations and
im using the equation T = 2pie(m/k). can ny1
help[/quote]
The spring will have its own natural frequency. If the mass of the spring
is a significant fraction of the m in your equation, you will need to worry
about the distributed mass effects in the spring.
Mark Folsom
.
|
|
|
|
| User: "Gregory L. Hansen" |
|
| Title: Re: force constant |
29 Jan 2004 08:23:26 PM |
|
|
In article <40181538$1_1@127.0.0.1>,
oli_collins <oli_collins@hotmail-dot-com.no-spam.invalid> wrote:
does the force constant of a spring vary when you cange the mass. iv
got to Measure the force constant of a spring using oscillations and
im using the equation T = 2pie(m/k). can ny1
help[/quote]
The force constant doesn't change, but the oscillation frequency is
affected by the spring's mass. That can clearly be seen, for instance, by
noting that an unloaded Slinky(tm) has a non-infinite frequency of
oscillation. It's like having an additional mass that moves with the
center of the spring. I'd have to check, but I think you could make the
correction by adding half the spring's mass to your test mass.
--
"When the fool walks through the street, in his lack of understanding he
calls everything foolish." -- Ecclesiastes 10:3, New American Bible
.
|
|
|
|
| User: "Helmut Wabnig" |
|
| Title: Re: force constant |
28 Jan 2004 02:07:50 PM |
|
|
On 28 Jan 2004 14:02:00 -0600,
oli_collins@hotmail-dot-com.no-spam.invalid (oli_collins) wrote:
does the force constant of a spring vary when you cange the mass. iv
got to Measure the force constant of a spring using oscillations and
im using the equation T = 2pie(m/k). can ny1
help[/quote]
If you do not overload the spring,
the force constant does not change.
google for Hooke's law.
w.
.
|
|
|
|
| User: "Uncle Al" |
|
| Title: Re: force constant |
28 Jan 2004 02:29:24 PM |
|
|
oli_collins wrote:
does the force constant of a spring vary when you cange the mass. iv
got to Measure the force constant of a spring using oscillations and
im using the equation T = 2pie
Small displacements/oscillations should be Hook's law. Progressively
larger displacements/oscillations will show increasing
non-linearity/anharmonic terms as you approach and then violate the
elastic limit of the metal. You will see internal friction and such
as you move stuff more.
Note that precision springs (old BET measurements) are often fused
silica not steel.
--
Uncle Al
http://www.mazepath.com/uncleal/
(Toxic URL! Unsafe for children and most mammals)
"Quis custodiet ipsos custodes?" The Net!
.
|
|
|
|
|
Related Articles |
|
|
