# Day 134: Goalless problem vs. lecture

**Posted:**April 24, 2013

**Filed under:**School Days Leave a comment

Instead of lecturing about how satellites can be analyzed using circular dynamics and Newton’s Universal Law of Gravitation, I made it a goalless problem. Each class had a couple of groups get to this point, and other groups did cool stuff too. One group (below) calculated the distance required for Earth’s gravity to be negligible, which they defined to be 0.1 N.

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