Engineering Mechanics Assignment Sheet – 5 Module - 5 ...



399986536195Q1. In the position shown bar AB has a constant angular velocity of 3 rad/s anticlockwise, determine the velocity of B, angular velocity of bar BC, velocity of C, angular velocity of bar CD.[Ans : VB= 720 mm/s ( ), ωBC= 2.05 r/s (Clockwise), VC= 1018 mm/s, ωCD= 4.8 r/s (Clockwise) ]3850640168910Q2. If the link CD is rotating at 5 rad/sec anticlockwise, determine the angular velocity of link AB at the instant shown.[Ans : ωAB= 3.71 r/s (Clockwise) ]349059539370Q3. For the link and slider mechanism shown in the figure locate the instantaneous centre of rotation of link AB. Also find the angular velocity of link OA. Take velocity of slider at B = 2500 mm/sec[ Ans : ωOA= 6.25 r/s (Clockwise) ]27971751270Q4. A Slider crank mechanism is shown in figure. The crank OA rotates anticlockwise at 100 rad/sec. Find the angular velocity of rod AB and the velocity of the slider at B.[ Ans : ωAB = 36.4 r/s, VB= 18.437 m/s]Q5. 310515059055Figure shows three bars AB, BC and CD hinged together to form a mechanism. If bar CD has angular velocity of 100 rpm in clockwise sense. Determine velocities of point B & C and the angular velocity of bar AB ?[ Ans : VC = 4.189 m/s ( ), VB= 4.906 m/s, ωAB = 19.62 r/s (Clockwise)]Q6. 247650013970Rod BDE is partially guided by a roller at D which moves in a vertical track as shown in the figure. Knowing that at the instant shown the angular velocity of AB is 5 rad/sec clockwise and β = 25o determine the (i) angular velocity of rod BE and (ii) velocity of point E.[ Ans : ωBE = 2.84 r/s (Anticlockwise), VE = 1817.69 mm/sec] ................
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