1. The problem statement, all variables and given/known data Io - mass: 8.9x1022kg period: 1.77 days mean distance from Jupiter: 422x103km Find the mass of Jupiter using the data for Io. 2. Relevant equations ƩF=ma Fc=mv2/r GmM/ro2 v=2∏r/T 3. The attempt at a solution I am just unsure what should I put the time in?? Seconds, hours, days, months, years?? I'm getting a different answer and as I google the mass of Jupiter, it is about 1.90x1027kg. I should be getting the same or really close to it. This is how I tackled the question. Let m=mass of Io, M=mass of Jupiter ƩF=ma GmM/ro2=mv2/ro M=v2ro/G M=4∏2ro3/GT2 M=4∏2(422x103)3/(6.67x10-11)(1.7x24x3600)2 M=1.90x1018 I'm getting the same answer BUT different exponents. I know I'm missing something out.