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Created page with "==Key Stage 4== ===Meaning=== Investigate the relationship between the extension of a spring and the force applied to that spring. ===..."
==Key Stage 4==
===Meaning===
Investigate the relationship between the [[extension]] of a [[Coil Spring|spring]] and the [[force]] applied to that [[Coil Spring|spring]].
===Experiment===
====Variables====
: [[Independent Variable]]: The [[force]] applied to the [[Coil Spring|spring]].
: [[Dependent Variable]]: The [[extension]] of the [[Coil Spring|spring]].
: [[Control Variable]]s: The [[Coil Spring|spring]] being used.
====Method====
{| class="wikitable"
|-
|[[File:RequiredPracticalHookesLaw1.png|center|600px]]
| style="height:20px; width:200px; text-align:center;" |A [[diagram]] of the [[apparatus]] used to investigate the effect of a [[force]] on the [[extension]] of a [[Coil Spring|spring]].
|}
: Set up the equipment as shown in the [[diagram]].
#[[Measure]] the original length of the [[Coil Spring|spring]] using a [[ruler]].
#Attach a known [[weight]] (approximately 1N) to the [[Coil Spring|spring]].
#[[Measure]] the new length of the [[Coil Spring|spring]].
#Calculate the [[extension]] of the [[Coil Spring|spring]] by [[subtract]]ing the original length from the new length of the [[Coil Spring|spring]].
#Repeat steps 2-4 up to around 6N.
#Plot a [[graph]] with the [[force]] of [[weight]] on the [[y-axis]] and the [[extension]] on the [[x-axis]]. The [[gradient]] of this [[graph]] will be the [[Spring Constant|spring constant]] of the [[Coil Spring|coil spring]].
====Improving [[Accuracy]]====
: Calculate the [[weight]] added by [[measure|measuring]] its [[mass]] each time and using the equation <math>W=mg</math> with <math>g=9.8</math>. This will give a more [[accuracy|accurate]] knowledge of the [[weight]] rather than relying on the number printed on the [[weight]]s.
: Add a [[Fiduciary Marker|fiduciary marker]] to the bottom of the [[Coil Spring|coil spring]] to prevent any [[error]] caused by not [[read]]ing the [[ruler]] from [[Eye Level|eye level]].
: Ensure the [[Coil Spring|spring]] is not moving when taking [[measure]]ments of it's length.
{| class="wikitable"
|-
|[[File:RequiredPracticalHookesLaw2.png|center|600px]]
| style="height:20px; width:200px; text-align:center;" |A [[Fiduciary Marker|fiduciary marker]] can be added to improve [[accuracy]] and [[precision]] of the length [[measure]]ments.
|}
====Improving [[Precision]]====
: Calculate the [[weight]] correct to two [[Significant Figure|significant figures]] by [[measure|measuring]] its [[mass]] to two [[Significant Figures|significant figures]] each time and using the equation <math>W=mg</math> with <math>g=9.8</math>. This will give a more [[precise]] knowledge of the [[weight]] rather than relying on the number printed on the [[weight]]s which may be [[precise]] to only one [[Significant Figure|significant figure]].
: Add a [[Fiduciary Marker|fiduciary marker]] with a fine point to the bottom of the [[Coil Spring|coil spring]] to give a [[precise]] [[read]]ing of the length of the [[Coil Spring|coil spring]].
===Meaning===
Investigate the relationship between the [[extension]] of a [[Coil Spring|spring]] and the [[force]] applied to that [[Coil Spring|spring]].
===Experiment===
====Variables====
: [[Independent Variable]]: The [[force]] applied to the [[Coil Spring|spring]].
: [[Dependent Variable]]: The [[extension]] of the [[Coil Spring|spring]].
: [[Control Variable]]s: The [[Coil Spring|spring]] being used.
====Method====
{| class="wikitable"
|-
|[[File:RequiredPracticalHookesLaw1.png|center|600px]]
| style="height:20px; width:200px; text-align:center;" |A [[diagram]] of the [[apparatus]] used to investigate the effect of a [[force]] on the [[extension]] of a [[Coil Spring|spring]].
|}
: Set up the equipment as shown in the [[diagram]].
#[[Measure]] the original length of the [[Coil Spring|spring]] using a [[ruler]].
#Attach a known [[weight]] (approximately 1N) to the [[Coil Spring|spring]].
#[[Measure]] the new length of the [[Coil Spring|spring]].
#Calculate the [[extension]] of the [[Coil Spring|spring]] by [[subtract]]ing the original length from the new length of the [[Coil Spring|spring]].
#Repeat steps 2-4 up to around 6N.
#Plot a [[graph]] with the [[force]] of [[weight]] on the [[y-axis]] and the [[extension]] on the [[x-axis]]. The [[gradient]] of this [[graph]] will be the [[Spring Constant|spring constant]] of the [[Coil Spring|coil spring]].
====Improving [[Accuracy]]====
: Calculate the [[weight]] added by [[measure|measuring]] its [[mass]] each time and using the equation <math>W=mg</math> with <math>g=9.8</math>. This will give a more [[accuracy|accurate]] knowledge of the [[weight]] rather than relying on the number printed on the [[weight]]s.
: Add a [[Fiduciary Marker|fiduciary marker]] to the bottom of the [[Coil Spring|coil spring]] to prevent any [[error]] caused by not [[read]]ing the [[ruler]] from [[Eye Level|eye level]].
: Ensure the [[Coil Spring|spring]] is not moving when taking [[measure]]ments of it's length.
{| class="wikitable"
|-
|[[File:RequiredPracticalHookesLaw2.png|center|600px]]
| style="height:20px; width:200px; text-align:center;" |A [[Fiduciary Marker|fiduciary marker]] can be added to improve [[accuracy]] and [[precision]] of the length [[measure]]ments.
|}
====Improving [[Precision]]====
: Calculate the [[weight]] correct to two [[Significant Figure|significant figures]] by [[measure|measuring]] its [[mass]] to two [[Significant Figures|significant figures]] each time and using the equation <math>W=mg</math> with <math>g=9.8</math>. This will give a more [[precise]] knowledge of the [[weight]] rather than relying on the number printed on the [[weight]]s which may be [[precise]] to only one [[Significant Figure|significant figure]].
: Add a [[Fiduciary Marker|fiduciary marker]] with a fine point to the bottom of the [[Coil Spring|coil spring]] to give a [[precise]] [[read]]ing of the length of the [[Coil Spring|coil spring]].