A digital checkweighing scale is tested with nothing on the pan and displays instead…
PHYSICS · Multi-part · Fermi University Physics · Scientific Practice & Experimental Methods · Quantities, units and the practice of measurement · Uncertainty in measurement
Measurement and Method, Ch The instrument: resolution, sensitivity, calibration and traceability
Problem
A digital checkweighing scale is tested with nothing on the pan and displays +3g instead of 0g; this zero error is constant and does not change between readings. A parcel is then placed on the pan and the scale displays 452g.
((a)) State the corrected mass of the parcel.
((b)) State whether reweighing the parcel several times and averaging the displayed values would remove this error, and why.