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7. A 2 kg tether ball hangs on a 1.2 meter long string. The string can sustain a maximum tension of 30 N before it breaks. To test this, we spin the ball faster and faster until we reach its maximum velocity. (a) Draw a force triangle for this extreme case, inctuding the string tension and the gravitaticnal force. On the diagram, show the strengdh of all three sides and the valucs of the angles b) How fast is the maximum velocity?

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fe 2 va should be marm R.

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