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Each student should bring to the laboratory a physics laboratory notebook (coil-bound with ¼" or 5 mm grid paper), an inexpensive set of geometrical instruments and a calculator with trigonometric functions.
Preferred value. d = (1.00x10−6 ± 0.05x10−6)m θ = 30.0o ± 0.5o, and n = 1 λ = 10−6xsin 30.0o = 0.50m. Maximum value of λ is obtained with maximum value of d and maximum value of θ. λmax = (1 + 0.05)x10−6xsin(30 + 0.5) = 0.53m. λmin = (1 − 0.05)x10−6xsin(30 − 0.5) = 0.47m. λ = 0.50 ± 0.03m.
Record both readings in centimeters and read to 0.01 cm. Make four independent measurements—that is, use a different part of the ruler for each measurement—and record all the readings.
Objective: To understand how to report both a measurement and its uncertainty. Learn how to propagate uncertainties through calculations. Define, absolute and relative uncertainty, standard deviation, and standard deviation of the mean. Equipment: meter stick, 1 kg mass, ruler, caliper, short wooden plank.
Example: To calculate the acceleration of an object travelling the distance d in time t, we use the relationship: a =2 dt − 2 . Suppose d and t have uncertainties Δ d and Δ t , what is the resulting
The laboratory manual has to be brought to the laboratory when you come to do the experiment. All the measurements have to be neatly recorded in the manual itself. The readings entered in the manual have to verify by your instructor before you leave the laboratory.
2-1 Position, Displacement, and Distance In describing an object’s motion, we should first talk about position – where is the object? A position is a vector because it has both a magnitude and a direction: it is some distance from a zero point (the point we call the origin) in a particular direction. With one-dimensional motion,
