If the accepted value of a quantity is 12.5 and you find it to be 11.6 in a lab

Question

If the accepted value of a quantity is 12.5 and you find it to be 11.6 in a lab experiment what is the percent relative error? 2) What is the difference between random error and systematic error? 1) 3) Assume the true value of a quantity is 105. of the sets of measurements which is the most (explain choice) A) Precise 51 B) Accurate4 reason reason Data Set 1:(92, 34, 10s, 89, 72, 54) Data Set 3: (112, 116, 114, 115, 113, 114) Data Set 2: (94, 123, 116, 99, 111, 92) Data Set 4: (104, 265, 198, 147, 201, 133) 4) How did you find the resultant force of adding two different force vectors together experimentally? 5) What purpose did the air cushion serve when measuring uniform acceleration of gravity on the air track? 6) What assumptions did we make about the pulleys and string in the experiment that used Atwood's machine?

Explanation / Answer

1) given that

accepted value is x = 12.5

measured value is xo = 11.6

percentage relative error is (accepted value - measured value)*100 / accepted value

(12.5-11.6) = 7.2 %

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