Physics Lab Report 2.docx

If the dots do not appear or not noticeable repeat

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the sides of the tape with increasing distance between them. If the dots do not appear or not noticeable, repeat the same procedure with the different timer. Number all the dots on the tape starting from zero. Measure the distance between every four dots ( x 04 ,x 15 ,x 26 ) with the meter stick to the nearest tenth of a centimeter and recorded in the table beginning from 0.05 seconds. Divided distance (∆x) by a change in time (∆t) which is equivalent to 0.1 seconds to find the velocity at the specific time. By subtracting velocity v by every four units ( v 6 v 2 ,v 7 v 3 ) estimate the change in velocity which should come out around 90-93cm/s. To estimate the value of g in centimeters per square second ( cm / s 2 ) divide ∆ v by ∆t whereby, the results should come out around 910-940 ( cm / s 2 ). Calculate the average of g by adding all the values and dividing them by 10; the result should be approximately 927 cm / s 2 . Estimate the change of g by the following formula
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∆ g = ( g 2 −´ g ) 2 + ( g 3 −´ g ) 2 10 , then divide it by the value of g and multiply by 100 to find percentage error which should be less than 5%. Data : Time(s) ∆t ( s ∆ x ( cm ) v t = ∆ x ∆t ( cm / s ) ∆ v t ( cm / s ) g t = ∆v ∆t ( cm / s 2 ) 2 40 0.1 x 04 = 9.3 v 2 = 93 ∆ v 2 = 94 g 2 = 940 3 40 0.1 x 15 = 11.1
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  • Spring '15
  • Centimetre gram second system of units, Centimetre, Maitry Tur, Sergey Khegay

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