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IP orbit motion

# IP orbit motion - Gravitational Motion Lab Name In this...

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Gravitational Motion Lab Name: ____________________________ In this exercise you are to use Interactive Physics to explore Kepler’s Laws of planetary motion. You will need to print your worksheets to turn in with the rest of the lab (one printout per group). I. Kepler’s First Law A. In your own words state and explain this first law. B. Now using Interactive Physics, turn on the universal gravitation and keep G = 6.67 x 10 -11 Nm 2 /kg 2 . Create a system with a central circular mass, M = 10 12 kg, and an orbiting circular mass, m = 10 3 kg. You will also need to turn on the “tracking” option. 1. Give m an appropriate velocity in order to produce and elliptical orbit. Record this value on a printout of the plot. You should also show the velocity vector for m and the acceleration vectors for both m and M during the orbit. 2. At what part of the orbit is the speed the greatest? The least? 3. At what part of the orbit is the acceleration of m the greatest? The least?

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