F- vs - X F (N) 1 1.90cm 9 5.90cm, 22.45cm) 2.00cm 4 x102 3 0.80cm (21.85cm, 6.50cm) 0.80cm

In an experiment to understand the concepts of potential and kinetic energies, as shown below, suppose, you are making some errors while making the measurement. Initial Height H Final Height H. If the weight used in the experiment is having an uncertainty of 1.1+ 0.01 N, the initial height is measured, with an uncertainty of 45 + 0.09 cm and the final height with an uncertainty of 26.2 + 0.09 cm. (Potential energies are calculated by the formula weight x height) Calculate, 1) The absolute uncertainty in the calculated value of Initial Potential Energy (in Joules) = 2) The absolute uncertainty in the calculated value of Final Potential Energy (in Joules) = 3) The absolute uncertainty in the calculated value of Loss of Potential Enerqies (in Joules) =

Why do you think it is important to include uncertainty in a measurement in a lab setting?

The range of an experimental result is 12 – 18. If these numbers represent the minimum and maximum reading as well, what is the mean experimental result and the uncertainty?