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five masses 2kg,5kg,6kg,3kg and 40kg are placed at the corners A,B,C,D and the centre O of a square frame of side 0.4m.it is to be rotated about an axis passing through the centre O and perpendicular to the plane of frame.calcualate the torque required to produced an angular acceleration of π/8rad/s^2. |
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Answer» Answer: AB is 7 kgm² and radius of gyration is √(0.7) m there are four POINT masses 1kg, 2kg, 3kg and 4kg are located at the CORNERS A, B , C and D respectively of a square ABCD of side 1M as shown in figure. now MOMENTUM of inertis about AB , I = = (1kg)(0)² + (2kg)(0)² + (3kg)(1m)² + (4kg)(1m)² = 0 + 0 + 3 kgm² + 4kgm² = 7 kgm² now let radius of gyration is r so, (1 kg + 2kg + 3kg + 4kg)r² = I = 7kgm² ⇒10r² = 7 ⇒r = √(0.7) m also read similar questions: four particles of mass 1kg, 2kg, 3kg, 4kg are PLACED at the four vertices a,b,c,d of a square of side 1m. find the posit... Read more on Brainly.in - brainly.in/question/12281993#readmore ok follow me ✌️ |
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