Question


C4B.7 Two particles of mass 2m and one particle of mass m lie on an equilateral triangle that has a height of L (mea- sured from one particle to the midpoint between the other two). Where is the location of the center of mass? (Hint: Choose your x axis to connect the two massive particles and the y axis to go through the light particle.)
C4M.1 Two space walkers, one with mass m 120 kg and the other with a mass m2 85 kg, hold on to the ends of a lightweight cable with length L 25 m. The astronauts are originally at rest in deep space. If the astronauts then start pulling themselves toward each other along the cable until they meet, roughly how far will the less massive astronaut move? [Hints: How does the center of mass of the two- astronaut system move (or fail to move)? Express the result as a fraction of L.
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