The Geneva wheel A provides intermittent rotary motion A for continuous motion D of disk

The Geneva wheel A provides intermittent rotary motion ω_A for continuous motion ω_D of disk D. By choosing d = √2r, the wheel has zero angular velocity at the instant pin B enters or leaves one of the four slots. Determine the magnitude of the angular velocity ω_Α of the Geneva wheel when θ = θ₁ so that pin B is in contact with the slot.

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Given: @D 2 = rad S r = 100 mm 01 = 30 deg