JEE Main Physics question
Two wires and , both anchored above the plane of revolution, are tied at to a small sphere of mass 5 kg, which revolves at a constant speed in a horizontal circle of radius 1.6 m, with making and making with the vertical. The minimum value of for both wires to remain taut is
Answer: (B)
Solution
With both wires taut, resolving forces: and . Solving simultaneously, , which is non-negative only when , i.e.
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