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CombatVetUSMC
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Homework Statement
An electrically neutral model airplane is flying in a horizontal circle on a 2.5-m guideline, which is nearly parallel to the ground. The line breaks when the kinetic energy of the plane is 50 J. Reconsider the same situation, except that now there is a point charge of +q on the plane and a point charge of -q at the other end of the guideline. In this case, the line breaks when the kinetic energy of the plane is 51.5 J. Find the magnitude of the charges.
Homework Equations
T[itex]_{}max[/itex] = 2*KE[itex]_{}1[/itex]/r
F= F[itex]_{}c2[/itex] - T[itex]_{}max[/itex]
q=√Fr[itex]^{}2[/itex]/k
The Attempt at a Solution
T[itex]_{}max[/itex]= 2(50J)/2.5m= 40J/m
not sure how to get F[itex]_{}c2[/itex]