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Created page with "==Key Stage 4== ===Meaning=== Investigate the relationship between the force and acceleration of an object. ===Experiment 1a: Light Gates Measuring Time and Veloc..."
==Key Stage 4==
===Meaning===
Investigate the relationship between the [[force]] and [[acceleration]] of an [[object]].
===Experiment 1a: Light Gates Measuring Time and Velocity===
====Variables====
: [[Independent Variable]]: The [[force]] applied to the [[object]].
: [[Dependent Variable]]: The [[acceleration]] of the [[object]].
: [[Control Variable]]s: The [[mass]] of the [[object]].
====Method====
{| class="wikitable"
|-
|[[File:RequiredPracticalFMA1.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 [[acceleration]] of an [[object]].
|}
: Set up the equipment as shown in the [[diagram]].
#Program into the [[Light Gate|light gates]] the length of the card on the glider as 2cm.
#Set the [[Light Gate|light gates]] to record the [[velocity]] through the [[Light Gate|gate]] and the time taken to travel between [[Light Gate|gates]].
#Attach a known [[weight]] (approximately 0.1N) to wire.
#Release the [[weight]] and allow the glider to [[accelerate]].
#Record the [[velocity]] through [[Light Gate|light gates]] 1 and 2 and the [[time]] taken between [[Light Gate|light gates]].
#Use the equation <math>a=\frac{v-u}{t}</math> to calculate the [[acceleration]] of the [[glider]].
#Repeat steps 3-6 adding 0.1N [[weight]] up to around 0.6N.
#Plot a [[graph]] with the [[force]] of [[weight]] on the [[x-axis]] and the [[acceleration]] on the [[y-axis]]. The [[gradient]] of this [[graph]] will be the [[mass]] of the [[glider]] showing that <math>F=ma</math>.
#Measure the [[mass]] of the glider using an [[Electronic Balance|electronic balance]] to compare results.
====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.
: Ensure the glider remains motionless when no [[weight]] is attached. If the glider moves then adjust the feet on the [[Air Track|air track]] until the glider remains stationary.
: [[Lubricate]] the [[pulley]] to reduce the [[force]] of [[friction]] which acts against the [[weight]] added.
====Improving [[Precision]]====
: Calculate the [[weight]] added 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]].
===Experiment 1b: Light Gates Measuring Displacement and Velocity===
====Variables====
: [[Independent Variable]]: The [[force]] applied to the [[object]].
: [[Dependent Variable]]: The [[acceleration]] of the [[object]].
: [[Control Variable]]s: The [[mass]] of the [[object]].
====Method====
{| class="wikitable"
|-
|[[File:RequiredPracticalFMA1.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 [[acceleration]] of an [[object]].
|}
: Set up the equipment as shown in the [[diagram]].
#Program into the [[Light Gate|light gates]] the length of the card on the glider as 2cm.
#Set the [[Light Gate|light gates]] to record the [[velocity]] through the [[Light Gate|gate]].
#[[Measure]] and record the distance between the [[Light Gate|light gates]] using a [[ruler]]. This will be the [[displacement]] of the glider.
#Attach a known [[weight]] (approximately 0.1N) to wire.
#Release the [[weight]] and allow the glider to [[accelerate]].
#Record the [[velocity]] through [[Light Gate|light gates]] 1 and 2.
#Use the equation <math>v^2 - u^2=2as</math> to calculate the [[acceleration]] of the [[glider]].
#Repeat steps 4-7 adding 0.1N [[weight]] up to around 0.6N.
#Plot a [[graph]] with the [[force]] of [[weight]] on the [[x-axis]] and the [[acceleration]] on the [[y-axis]]. The [[gradient]] of this [[graph]] will be the [[mass]] of the [[glider]] showing that <math>F=ma</math>.
#Measure the [[mass]] of the glider using an [[Electronic Balance|electronic balance]] to compare results.
====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.
: Ensure the glider remains motionless when no [[weight]] is attached. If the glider moves then adjust the feet on the [[Air Track|air track]] until the glider remains stationary.
: [[Lubricate]] the [[pulley]] to reduce the [[force]] of [[friction]] which acts against the [[weight]] added.
====Improving [[Precision]]====
: Calculate the [[weight]] added 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]].
: Use a ruler with a higher [[resolution]] to give a more [[precise]] [[displacement]] for the [[glider]].
===Meaning===
Investigate the relationship between the [[force]] and [[acceleration]] of an [[object]].
===Experiment 1a: Light Gates Measuring Time and Velocity===
====Variables====
: [[Independent Variable]]: The [[force]] applied to the [[object]].
: [[Dependent Variable]]: The [[acceleration]] of the [[object]].
: [[Control Variable]]s: The [[mass]] of the [[object]].
====Method====
{| class="wikitable"
|-
|[[File:RequiredPracticalFMA1.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 [[acceleration]] of an [[object]].
|}
: Set up the equipment as shown in the [[diagram]].
#Program into the [[Light Gate|light gates]] the length of the card on the glider as 2cm.
#Set the [[Light Gate|light gates]] to record the [[velocity]] through the [[Light Gate|gate]] and the time taken to travel between [[Light Gate|gates]].
#Attach a known [[weight]] (approximately 0.1N) to wire.
#Release the [[weight]] and allow the glider to [[accelerate]].
#Record the [[velocity]] through [[Light Gate|light gates]] 1 and 2 and the [[time]] taken between [[Light Gate|light gates]].
#Use the equation <math>a=\frac{v-u}{t}</math> to calculate the [[acceleration]] of the [[glider]].
#Repeat steps 3-6 adding 0.1N [[weight]] up to around 0.6N.
#Plot a [[graph]] with the [[force]] of [[weight]] on the [[x-axis]] and the [[acceleration]] on the [[y-axis]]. The [[gradient]] of this [[graph]] will be the [[mass]] of the [[glider]] showing that <math>F=ma</math>.
#Measure the [[mass]] of the glider using an [[Electronic Balance|electronic balance]] to compare results.
====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.
: Ensure the glider remains motionless when no [[weight]] is attached. If the glider moves then adjust the feet on the [[Air Track|air track]] until the glider remains stationary.
: [[Lubricate]] the [[pulley]] to reduce the [[force]] of [[friction]] which acts against the [[weight]] added.
====Improving [[Precision]]====
: Calculate the [[weight]] added 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]].
===Experiment 1b: Light Gates Measuring Displacement and Velocity===
====Variables====
: [[Independent Variable]]: The [[force]] applied to the [[object]].
: [[Dependent Variable]]: The [[acceleration]] of the [[object]].
: [[Control Variable]]s: The [[mass]] of the [[object]].
====Method====
{| class="wikitable"
|-
|[[File:RequiredPracticalFMA1.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 [[acceleration]] of an [[object]].
|}
: Set up the equipment as shown in the [[diagram]].
#Program into the [[Light Gate|light gates]] the length of the card on the glider as 2cm.
#Set the [[Light Gate|light gates]] to record the [[velocity]] through the [[Light Gate|gate]].
#[[Measure]] and record the distance between the [[Light Gate|light gates]] using a [[ruler]]. This will be the [[displacement]] of the glider.
#Attach a known [[weight]] (approximately 0.1N) to wire.
#Release the [[weight]] and allow the glider to [[accelerate]].
#Record the [[velocity]] through [[Light Gate|light gates]] 1 and 2.
#Use the equation <math>v^2 - u^2=2as</math> to calculate the [[acceleration]] of the [[glider]].
#Repeat steps 4-7 adding 0.1N [[weight]] up to around 0.6N.
#Plot a [[graph]] with the [[force]] of [[weight]] on the [[x-axis]] and the [[acceleration]] on the [[y-axis]]. The [[gradient]] of this [[graph]] will be the [[mass]] of the [[glider]] showing that <math>F=ma</math>.
#Measure the [[mass]] of the glider using an [[Electronic Balance|electronic balance]] to compare results.
====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.
: Ensure the glider remains motionless when no [[weight]] is attached. If the glider moves then adjust the feet on the [[Air Track|air track]] until the glider remains stationary.
: [[Lubricate]] the [[pulley]] to reduce the [[force]] of [[friction]] which acts against the [[weight]] added.
====Improving [[Precision]]====
: Calculate the [[weight]] added 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]].
: Use a ruler with a higher [[resolution]] to give a more [[precise]] [[displacement]] for the [[glider]].