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JEE Main Physics question

PhysicsSystems of Particles and Rotational MotionJEE Main

is an equilateral triangle with as its centre. represent three forces acting along the sides , and respectively. If the total torque about is zero, then the magnitude of is

Answer: (A)

Solution

(the centroid) is equidistant from all three sides (the inradius), so each force's torque magnitude about is proportional to its own

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Question ID VK-159000