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T y 7777777imn77t 22. a uniform beam of mass m is pivoted at one end and held in equilibrium at an angle 4 by a horizon- tal wire, as shown above. the tension 7
T Y 7777777imn77T 22. A uniform beam of mass m is pivoted at one end and held in equilibrium at an angle 4 by a horizon- tal wire, as shown above. The tension 7 in the wire is (A)mg cot 2 (B) mgcot 0 C)mgtan4 (D) 2mg tan 6 (E) mg Please tell me this Answer
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Abhishek singh![best-answer]()
for rotational equilibrium, equate external torque equal to zero( extternal Torque = zero). we have torque due to two forces, 1) due to mg. 2) due to Tension(T) and torque is force times the perpendicular distance. For perpendicular distance, take components of the length of rod. if you have any doubts , please ask. Best regards.
Option A is correct.