Prelab exercises should be completed before coming to the lab. Prelabs must be submitted prior to the start of each lab using eClass. A mass m = 50 g is suspended from a spring with spring constant k = 8.0 N/m. 2. Assuming an uncertainty in k of dis, uncertainty in m of 6m, uncertainty in a: of (5:13, uncertainty in v of (52), and that g is perfectly known (i.e., 5g expression for the uncertainty in the total energy Etot of equation = 0), what is the E]? Refer to the uncertainty rules described in the Introductory Information chapter of the lab manual. Show your work! 1 1 EM = spring + Ug + K = 5"\"\"2 + mgw + 5mm? (4.1)