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Answer both parts. A force of magnitude 50 N is applied at the bottom point Q of a disk of radius 4 m that is

Answer both parts.

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A force of magnitude 50 N is applied at the bottom point Q of a disk of radius 4 m that is pinned at P (leftmost point) as shown in the gure. IIP'II=50N (a) Find the angle between the force and the vector from P to Q. E" (b) Find the magnitude of the applied torque. Find the magnitude of the cross product a x b of the vectors shown in the figure, where | |a | | = 5 and ||b| | = 9. a 120 b

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