Physics

A student ties a 600.0 g rock to a 1.50 m-long string and swings it around her head in a horizontal circle. At what angular speed (in rev/min) does the string tilt down at a 13.1° angle, assuming that the local acceleration due to gravity is -9.80 m/s2?

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asked by Helpp
  1. weight/centripforce=tan13.1

    mg/(mv^2/r)= tan13.1
    solve for v

  2. It says it was incorrect even after I converted to rev/min

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    posted by Helpp

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