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a) Calculate the torque vector if =-i+ 2j F = 81 - 31

a) Calculate the torque vector if =-i+ 2j F = 81 - 31

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a) Calculate the torque vector if f=-i+ 2j F=- 8i – 3) b) The disc shown in the figure is rotating and it is attachted to a frictionless pin at its center. An extra weight with a in the counter clock wise direction mass of m is attached to the disc. Initially the extra weight m is at the edge of the disc (radius = R) and while the disc rotates, the extra weight starts to move radially inward to a positon that the radius is r. wp = 2(w,) i. Find the relation between wiand wr. What should be the mass of the extra weight in order to make Wp = 2(w,).
Transcribed Image Text:a) Calculate the torque vector if f=-i+ 2j F=- 8i – 3) b) The disc shown in the figure is rotating and it is attachted to a frictionless pin at its center. An extra weight with a in the counter clock wise direction mass of m is attached to the disc. Initially the extra weight m is at the edge of the disc (radius = R) and while the disc rotates, the extra weight starts to move radially inward to a positon that the radius is r. wp = 2(w,) i. Find the relation between wiand wr. What should be the mass of the extra weight in order to make Wp = 2(w,).
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