Part A You've made a simple pendulum with a length of 1.55 m, and you also have a (very light) spring with force constant 2.30 N /m . What mass should you add to the spring so that its period will be the same as that of your pendulum? Express your answer with the appropriate units. For related problem-solving tips and strategies, you may want to view a Video Tutor Solution of Period and frequency of a simple pendulum. ? m = Value Units