1. The problem statement, all variables and given/known data A 200 g mass elongates a spring 3 cm from its equilibrium position. Find the spring constant (k) of the spring in N/m. An unknown mass is attached to the same spring and set in motion. If the period of oscillation is 3 seconds, find the value of the unknown mass in kg. 2. Relevant equations k=mg/x T=2pi(sqrt)(m/k) 3. The attempt at a solution I think I've determined part A to be 65.4 N/m. I did this by converting cm->m and g->kg. Then I filled it into the equation... k=.2(9.81)/.03 = 65.4 N/m Then I plug it into the other equation for part two of the question 3=2pi(sqrt)m/65.4 3/2pi (changed to .477 for ease)=sqrt(m/65.4) .477^2=(m/65.4) .22797=m/65.4 .22797(65.4)=m m=14.91 kg Mostly what I'm asking for here is a confirmation on my work and if the m at the end of my second equation comes directly in kg or if it needs to be converted first.