A digital timer with a resolution (display step) of records the time for a ball to…
PHYSICS · Multi-part · Fermi University Physics · Scientific Practice & Experimental Methods · Uncertainty in measurement · Uncertainty in measurement
Measurement and Method, Ch Type A, Type B and the uncertainty budget
Problem
A digital timer with a resolution (display step) of 1ms records the time for a ball to cross a photogate on twelve repeated trials, giving (ms): 150, 151, 149, 152, 150, 151, 149, 152, 150, 151, 149, 152.
((a)) Evaluate the Type A standard uncertainty of the mean crossing time, with its degrees of freedom.
((b)) Evaluate the Type B standard uncertainty that the timer's display resolution contributes to a single reading, stating the distribution assumed.