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This Concept Map, created with IHMC CmapTools, has information related to: GravityLab5PeriodsDeleted, Note: During experiment, experimental method was improved by measuring 10 Periods instead of 5 Periods, variables have uncertainty, It was shown that measuring 10 Periods reduced the error by a substantial amount informs Conclusions, Conclusions <math xmlns="http://www.w3.org/1998/Math/MathML"> <mrow> <mtext> The acceleration due to gravity near the Earth's surface is 9.9 ± 0.6 m/ </mtext> <mmultiscripts> <mtext> s </mtext> <none/> <mtext> 2 </mtext> </mmultiscripts> </mrow> </math>, Future experiments can increase accuracy by Increasing number of periods measured, not significant as they contribute ə% of error, 10 Periods instead of 5 Periods as It was shown that measuring 10 Periods reduced the error by a substantial amount, 1.86335s to calculate <math xmlns="http://www.w3.org/1998/Math/MathML"> <mrow> <mtext> g= </mtext> <mfrac> <mrow> <mtext> 4 </mtext> <mmultiscripts> <mtext> Lπ </mtext> <none/> <mrow> <mtext> 2 </mtext> </mrow> </mmultiscripts> </mrow> <mmultiscripts> <mtext> T </mtext> <none/> <mtext> 2 </mtext> </mmultiscripts> </mfrac> </mrow> </math>, <math xmlns="http://www.w3.org/1998/Math/MathML"> <mtext> π </mtext> </math> from uncertainty in last digit ±0.0000000005, ᢛ% of error to dg=±0.64074522, uncertainty in Period (T), 3.141592654 to calculate <math xmlns="http://www.w3.org/1998/Math/MathML"> <mrow> <mtext> g= </mtext> <mfrac> <mrow> <mtext> 4 </mtext> <mmultiscripts> <mtext> Lπ </mtext> <none/> <mrow> <mtext> 2 </mtext> </mrow> </mmultiscripts> </mrow> <mmultiscripts> <mtext> T </mtext> <none/> <mtext> 2 </mtext> </mmultiscripts> </mfrac> </mrow> </math>, Note: Human error contributed more than 99% of uncertainty found by the operators performing an online reaction test at humanbenchmark.com, π looked up in the calculator accurate to 9 decimals 3.141592654, dg=±0.64074522 <math xmlns="http://www.w3.org/1998/Math/MathML"> <mrow> <mtext> Result: g = 9.9 ± 0.6 m/ </mtext> <mmultiscripts> <mtext> s </mtext> <none/> <mtext> 2 </mtext> </mmultiscripts> </mrow> </math>, instrument precision ±0.0005m resulting in error of <math xmlns="http://www.w3.org/1998/Math/MathML"> <mtext> dL </mtext> <mrow> <mtext> </mtext> <mfenced open="(" close=")"> <mfrac> <mtext> ∂g </mtext> <mrow> <mtext> ∂L </mtext> </mrow> </mfrac> </mfenced> </mrow> </math>, Period (T) measured in 10 periods with a stopwatch accurate to 0.01s 1.86335s, uncertainty in <math xmlns="http://www.w3.org/1998/Math/MathML"> <mtext> π </mtext> </math>, <math xmlns="http://www.w3.org/1998/Math/MathML"> <mrow> <mtext> -6.4072× </mtext> <mmultiscripts> <mtext> 10 </mtext> <none/> <mtext> -1 </mtext> </mmultiscripts> </mrow> </math> significant and contributes ᢛ% of error, Future experiments can increase accuracy by Automating the timing process