Hooke's law - Revision history

Ist12916 at 10:24, 11 July 2015

2015-07-11T10:24:20Z

Ist12916 at 17:47, 25 May 2015

2015-05-25T17:47:19Z

Ist12916 at 17:20, 25 May 2015

2015-05-25T17:20:31Z

Ist12916 at 17:17, 25 May 2015

2015-05-25T17:17:46Z

Ist12916: /* Links */

2015-05-11T08:17:13Z

Links

Ist12916: /* Links */

2015-05-11T08:15:30Z

Links

Ist12916: /* Experiment Description */

2015-05-11T08:13:09Z

Experiment Description

Ist12916: Created page with "=Experiment Description= The purpose of this experiment is to verify the Hooke's law which relates the extension or compression of a spring with its exerted force given by \(..."

2015-05-11T08:12:04Z

Created page with "=Experiment Description= The purpose of this experiment is to verify the Hooke's law which relates the extension or compression of a spring with its exerted force given by \(..."

New page

=Experiment Description=
The purpose of this experiment is to verify the Hooke's law which relates the extension or compression of a spring with its exerted force given by \( F = -K \times \delta s \)

<div class="toccolours mw-collapsible mw-collapsed" style="width:420px">
'''Links'''
<div class="mw-collapsible-content">

*Video: rtsp://elabmc.ist.utl.pt/mola.sdp
*Laboratory: Basic in e-lab.ist.eu[http://e-lab.ist.eu]
*Control room: Mola
*Grade: *

</div>
</div>

<swf height="270" width="510">http://www.elab.tecnico.ulisboa.pt/anexos/descricoes-flash/Mola.swf</swf>

=Who likes this idea=
[[File:UAC.png|link=http://www.www.uac.pt/|border|179px|border|179px]]

This experiment is currently hosted at University of Açores. The automation of the experiment was made by IST students as part of the e-lab project.

The first schools involved in hosting this distributed experiments were Escola Secundária Padre António Vieira, Alvalade/Lisboa and Externato Cooperativo da Benedita, Leiria. Escola Secundária Poeta Al Berto in Sines also colaborated.

=Experimental Apparatus=
The apparatus is composed by a servo motor capable of compress or extend a spring by means of a rod. The spring distension is exactly measured by a potentiometer while the force is detected by a pressure gauge on top of the spring.

[[File:mola-montagem.jpg|thumb|alt=Experimental setup|Setup]]

It is possible to choose the compression/expansion limits of the spring and the velocity to detect possible hysteresis effects.

=Protocol=
The user must specify the initial and final servo positions, the number of samples, the time interval between them and the number of cycles to execute (i.e. several compressions and/or distensions). This last option indirectly defines the speed at which the experiment occurs.

[[File:Boyle-mariotte-graf1.png|thumb|Graphical fit with experimental results with 1 sec. between samples.]]

=Links=
https://en.wikipedia.org/wiki/Hooke%27s_lawhttps://en.wikipedia.org/wiki/Hooke%27s_law
*[[Lei de Hooke| Portuguese version (Versão em Português)]]

@@ Line 27: / Line 27: @@
 [[File:mola-montagem.jpg|thumb|alt=Experimental setup|Setup]]
-The spring has 37.2 mm of which 10.0 mm are compressed windings (two sets of 14 windings). This means that the working lengh of the spring varies from 23.1 mm on compression to 32.4 on distension.
+The spring has 37.2 mm of which 10.0 mm are compressed windings (two sets of 14 windings). This means that the working length of the spring varies from 23.1 mm on compression to 32.4 on distension.
 It is possible to choose the compression/expansion limits of the spring and the velocity to detect possible hysteresis effects.
@@ Line 35: / Line 35: @@
 The user must specify the initial and final servo positions, the number of samples, the time interval between them and the number of cycles to execute (i.e. several compressions and/or distensions). This last option indirectly defines the speed at which the experiment occurs.
-[[File:Boyle-mariotte-graf1.png|thumb|Graphical fit with experimental results with 1 sec. between samples.]]
+[[File:SpringForce.PNG|thumb|Adjusting two lines is needed to fit the hole experiment characteristic.]]
 =Links=
 [https://en.wikipedia.org/wiki/Hooke's_law wikipedia]
 *[[Lei de Hooke| Portuguese version (Versão em Português)]]

@@ Line 30: / Line 30: @@
 [[File:mola-montagem.jpg|thumb|alt=Experimental setup|Setup]]
-The spring has 32.4 mm of which 9.3 mm are compressed windings (two sets of 14 windings). This means that the working lengh of the spring varies from 23.1 mm on compression to 32.4 on distension.
+The spring has 37.2 mm of which 10.0 mm are compressed windings (two sets of 14 windings). This means that the working lengh of the spring varies from 23.1 mm on compression to 32.4 on distension.
 It is possible to choose the compression/expansion limits of the spring and the velocity to detect possible hysteresis effects.

@@ Line 39: / Line 39: @@
 =Links=
-[https://en.wikipedia.org/wiki/Hooke%27s_law, wikipedia]
+[https://en.wikipedia.org/wiki/Hooke's_law wikipedia]
 *[[Lei de Hooke| Portuguese version (Versão em Português)]]

@@ Line 14: / Line 14: @@
 </div>
 </div>
 =Who likes this idea=

@@ Line 1: / Line 1: @@
 =Experiment Description=
-The purpose of this experiment is to verify the Hooke's law which relates the extension or compression of a spring with its exerted force  given by \( F = -k \times \Delta s \).
+The purpose of this experiment is to verify the Hooke's law which relates the extension or compression of a spring with its exerted force  given by <math> F = -k \times \Delta s </math>.
@@ Line 21: / Line 21: @@
 [[File:UAC.png|link=http://www.www.uac.pt/|border|179px|border|179px]]
-This experiment is currently hosted at University of Açores. The automation of the experiment was made by IST students as part of the e-lab project.
+This experiment is currently hosted at University of Azores. The automation of the experiment was made by IST students as part of the e-lab project.
-The first schools involved in hosting this distributed experiments were Escola Secundária Padre António Vieira, Alvalade/Lisboa and Externato Cooperativo da Benedita, Leiria. Escola Secundária Poeta Al Berto in Sines also colaborated.
+The first schools involved in hosting this distributed experiments were Escola Secundária Padre António Vieira, Alvalade/Lisboa and Externato Cooperativo da Benedita, Leiria. Escola Secundária Poeta Al Berto in Sines also cooperatein our project.
 =Experimental Apparatus=
@@ Line 29: / Line 29: @@
 [[File:mola-montagem.jpg|thumb|alt=Experimental setup|Setup]]
 It is possible to choose the compression/expansion limits of the spring and the velocity to detect possible hysteresis effects.