GCSE Physics Required Practical: Investigating Newton's Second Law - Revision history

NRJC: /* Improving Precision */

2019-10-17T08:36:14Z

‎Improving Precision

2019-04-13T11:34:21Z

2019-04-08T19:40:55Z

‎Improving Accuracy

2019-04-07T21:16:42Z

2019-04-07T21:16:27Z

2019-03-25T09:29:51Z

2019-03-20T15:31:24Z

‎Improving Accuracy

2019-03-20T15:30:37Z

‎Improving Accuracy

2019-03-20T15:30:22Z

‎Improving Accuracy

2019-03-20T14:14:58Z

‎Method

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 : Ensure the glider remains motionless when no [[weight]] is attached. If the glider moves then adjust the feet on the air track until the glider remains stationary.
 : [[Lubricate]] the [[pulley]] to reduce the [[force]] of [[friction]] which acts against the [[weight]] added.
 ===Experiment 2: Trolley with Markings===

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 ==Key Stage 4==
 ===Meaning===
 Investigate the relationship between the [[force]] and [[acceleration]] of an [[object]].

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 ====Improving [[Accuracy]]====
 : Calculate the [[weight]] added by [[measure|measuring]] its [[mass]] using an [[Electronic Balance|electronic balance]] on a flat, level surface 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.
-: Adjust the [[friction]] compensated slope so that the trolley will move at constant [[velocity]] when no [[Unbalanced Force|unbalanced force]] is applied.
+: Adjust the [[friction]] compensated slope so that the trolley will move at constant [[velocity]] when no [[Unbalanced Forces|unbalanced force]] is applied.
 : [[Lubricate]] the [[pulley]] to reduce the [[force]] of [[friction]] which acts against the [[weight]] added.
 : Use [[Light Gate|light gates]] and a [[Data Logger|data logger]] to record the [[time]] taken between each marker.

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 ====Improving [[Accuracy]]====
 : Calculate the [[weight]] added by [[measure|measuring]] its [[mass]] using an [[Electronic Balance|electronic balance]] on a flat, level surface 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.
+: Ensure the glider remains motionless when no [[weight]] is attached. If the glider moves then adjust the feet on the air track until the glider remains stationary.
 : [[Lubricate]] the [[pulley]] to reduce the [[force]] of [[friction]] which acts against the [[weight]] added.

@@ Line 30: / Line 30: @@
 ====Improving [[Accuracy]]====
 : Calculate the [[weight]] added by [[measure|measuring]] its [[mass]] using an [[Electronic Balance|electronic balance]] on a flat, level surface 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.
+: Ensure the glider remains motionless when no [[weight]] is attached. If the glider moves then adjust the feet on the air track until the glider remains stationary.
 : [[Lubricate]] the [[pulley]] to reduce the [[force]] of [[friction]] which acts against the [[weight]] added.

@@ Line 32: / Line 32: @@
 : 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.
 ===Experiment 1b: Light Gates Measuring Displacement and Velocity===
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 ====Improving [[Precision]]====
 : Use a ruler with a higher [[resolution]] to give a more [[precise]] [[displacement]] for the glider.
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 ====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 [[Light Gate|light gates]] and a [[Data Logger|data logger]] to record the [[time]] taken between each marker to reduce the [[Random Error|random error]] caused by the [[human]] use of a [[stopwatch]].

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 #Use the equation <math>a=\frac{v-u}{t}</math> to calculate the [[acceleration]] of the trolley.
 #Repeat steps 2-7 adding 0.1N [[weight]] up to around 0.6N.
-#Plot a [[Scatter Graph|scatter graph]] with the [[force]] of [[weight]] on the [[x-axis]] and the [[acceleration]] on the [[y-axis]]. The [[gradient]] of [[Line of Best Fit|line of best fit]] will be the [[mass]] of the glider showing that <math>F=ma</math>.#Measure the [[mass]] of the trolley using an [[Electronic Balance|electronic balance]] to compare [[results]].
+#Plot a [[Scatter Graph|scatter graph]] with the [[force]] of [[weight]] on the [[x-axis]] and the [[acceleration]] on the [[y-axis]]. The [[gradient]] of [[Line of Best Fit|line of best fit]] will be the [[mass]] of the glider showing that <math>F=ma</math>.
 ====Improving [[Accuracy]]====