3 Knowing that at the instant shown the angular velocity of bar AB is 15 rad/s clockwise and the angular velocity of bar EF is 10 rad/s clockwise. Given, BE = 500 mm, EF = 375 mm, 4BAF = 45°, determine: (a) the angular velocity of rod DE (b) the relative velocity of collar B with respect to rod DE. A D B F E

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