Inez is putting up decorations for her sister's quinceanera (fifteenth birthday party). She ties three light...

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Physics

Inez is putting up decorations for her sister's quinceanera(fifteenth birthday party). She ties three light silk ribbonstogether to the top of a gateway and hangs from each ribbon arubber balloon. To include the effects of the gravitational andbuoyant forces on it, each balloon can be modeled as a particle ofmass m=2.79 g, with its center 48.7 cm from the point of support.To show off the colors of the balloons, Inez rubs the whole surfaceof each balloon with her woolen scarf, to make them hang separatelywith gaps between them. The centers of the hanging balloons form ahorizontal equilateral triangle with sides 30.2 cm long. What isthe common charge each balloon carries?

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4.2 Ratings (753 Votes)
Let Fe be the electrostatic force between one balloon and another That force will be horizontal Looking down from above The horizontal force on any one balloon is the vector sum of the forces from the adjacent balloons An equilateral triangles angle is 60 so the angle between the forces is    See Answer
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