a 4. (30%) The link EF of mass 2 kg is welded at point A to a link ABC of mass 2 kg, which rotates about a pivot B. A sp

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A 4 30 The Link Ef Of Mass 2 Kg Is Welded At Point A To A Link Abc Of Mass 2 Kg Which Rotates About A Pivot B A Sp 1 (32.23 KiB) Viewed 8 times

a 4. (30%) The link EF of mass 2 kg is welded at point A to a link ABC of mass 2 kg, which rotates about a pivot B. A spring of constant k =300 N/m and of un-stretched length 150 mm is attached to the link ABC as shown. Knowing that in the position shown the assembly has an angular velocity of 10 rad's clockwise, (a) Determine the angular velocity when the assembly has rotated 90' clockwise, 150 mm 150 mm (b) Find the corresponding angular acceleration of part (a), and EL (e) Find the corresponding reaction force at point B. (For (b) and (c), set up all the required equations with a Free-Body-Diagram 150 mm and a Kinetic Diagram) 150 mm 360 mm