1. The problem statement, all variables and given/known data What would Earth's rotation period have to be for objects on the equator to have a centripetal acceleration equal to 9.8 m/s^2? ____ min 2. Relevant equations Centripetal acceleration is equal to velocity * (2PI/T), where T is the period in seconds. 3. The attempt at a solution I set centripetal acceleration equal to 9.8m/s^2 and solved for T. Then I took T and divided it by 60 so I could get the answer in minutes. I came out with 4.97 min which Webassign says is incorrect. Any ideas?