Physics 1029A/B Lecture Notes - Lecture 38: Pogo Stick
29 Dec 2015
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Physics lecture 31 two examples, a dangerous toy. Example - an object with mass 1 kg on a frictionless horizontal surface is attached to the end of a horizontal spring with k = 100 n/m. We know: a = 1. 0 m due to problem text, = due to x = a at t = 0 o. 2: we calculate the period first, use n for the number of periods in 0. 5s. Example - a pogo stick stores energy in a spring with k = 2. 5 104 n/m. = 0. 1 m (a) the spring compression is a maximum. At position x2 = 0 m (b) the spring is relaxed. At position x3 the spring remains relaxed and the kid with the pogo stick stops at the top of the jump (c). The mass of the pogostick and the kid is m = 25 kg. (a) calculate the total energy of the system kid & pogo stick.
