Question Figure Q1 shows the schematic diagram of a moulding press, which is driven by a crank BC rotating anticlockwise at a constant angular velocity (@) of 100 rpm. C and O are fixed pivots and D is the mid-point of link AB. At this instant in time, the crank makes an angle (0) of 54° with the horizontal as shown. The angle ß is 17° to the vertical and the angle a is 16° to the horizontal as shown. (a) Determine the angular velocities of links OA and AB. (b) Consider the centre of mass of link AB to be at D (as shown in Figure Q1). Determine the absolute velocity of point D. (c) Determine the angular accelerations of links OA and AB. (d) Determine the absolute acceleration at point D (include its angle to the horizontal 8). A O THIT a BC = 50mm OA 150mm AB = 300mm AD = 150mm Figure Q1. 4-Bar Linkage System C B

Question Figure Q1 shows the schematic diagram of a moulding press, which is driven by a crank BC rotating anticlockwise at a constant angular velocity (@) of 100 rpm. C and O are fixed pivots and D is the mid-point of link AB. At this instant in time, the crank makes an angle (0) of 54° with the horizontal as shown. The angle ß is 17° to the vertical and the angle a is 16° to the horizontal as shown. (a) Determine the angular velocities of links OA and AB. (b) Consider the centre of mass of link AB to be at D (as shown in Figure Q1). Determine the absolute velocity of point D. (c) Determine the angular accelerations of links OA and AB. (d) Determine the absolute acceleration at point D (include its angle to the horizontal 8). A O THIT a BC = 50mm OA 150mm AB = 300mm AD = 150mm Figure Q1. 4-Bar Linkage System C B

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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