16.5 A uniform rod BC of mass 4 kg is connected to a collar A by a 250-mm cord AB. Neglecting the mass of the collar and cord, determine (a) the smallest constant acceleration a, for which the cord and the rod will lie in a straight line, (b) the corresponding tension in the cord. a P

16.5 A uniform rod BC of mass 4 kg is connected to a collar A by a 250-mm cord AB. Neglecting the mass of the collar and cord, determine (a) the smallest constant acceleration a, for which the cord and the rod will lie in a straight line, (b) the corresponding tension in the cord. a P

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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Fig. 3.19 shows a hammer of mass 6 kg and pivoted at A. It falls against a wedge of mass 1 kg which is driven forward 6 mm, by the impact into a heavy rigid block. The resistance to the wedge varies uniformly with the distance through which it moves, varying zero to R newtons. A Hammer 1m I 60° Wedge Fig. 3.19 Neglecting the small amount by which the hammer rises after passing through the vertical through A and assuming that the hammer does not rebound, find the value of R. [Ans. 8.38 kN]
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2. A uniform rod BC of mass 5 kg is connected to a collar A by a 250-mm cord AB. Neglecting the mass of the collar and cord, determine (a) the smallest constant acceleration a for which the cord and the rod will lie in a straight line, (b) the corresponding tension in the cord. ад A B 400 mm 250 mm 350 mm
16.79 A uniform rod of length L. and mass m is supported as shown. If the cable attached at B suddenly breaks, determine (a) the acceleration of end B. (b) the reaction at the pin support. Fig. P16.79 B
(a) the relative acceleration of the collar with respect to the rod, . (b) the magnitude of the horizontal force exerted on the collar by the rod.
A uniform 144-lb cube is attached to a uniform 136-lb circular shaft as shown, and a couple M with a constant magnitude is applied to the shaft when the system is at rest. Knowing that r = 4 in., L= 12 in., and the angular velocity of the system is 960 rpm after 4 s, determine the magnitude of the couple M.
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Problem # 5) A pulley having a moment of inertia of 0.191b-ft-s² is connected to two masses as shown. The masses A and B have linear acceleration of 1.85ft/s² upward and 1.11 ft/s² downward, respectively. Assuming no axle friction, determine (a) the tension forces TA and TB in the cables connecting the masses, and (b) the angular acceleration a of the pulley. Include and present the Free Body Diagram and Inertial Response Diagram as part of the solving process. Hint #1: Hint #2: use mA = 0.1553slugs, and mв = 0.3106slugs treat each body separately 6 in. B 10 lb 10 in. A 5 lb
A force P with a magnitude of 3 N is applied to a tape wrapped around the body indicated. Knowing that the body rests on a frictionless horizontal surface, determine the acceleration of (a) point A, (b) point B.
Q2) A loaded Porter governor has four links each 200 mm long and are hinged at a distance of 40 mm from the axis of rotation. The mass of each ball is 2 kg and mass of the sleeve is 20 kg. The governor sleeve begins to rise at 300 r.p.m. when the links are at an angle of 35° to the vertical. Assuming the friction force to be constant, determine the minimum and maximum speed of rotation when the inc lination of the arms to the vertical is 40°.
Problem 2: The mechanism shown is one of two identical mechanisms attached to the two sides of a 90-kg. uniform rectangular door. Edge ABC of the door is guided by wheels of negligible mass that roll in horizontal and vertical tracks. A spring of constant k 600 N/m is attached to wheel B. Knowing that the door is released from rest in the position 6 30° with the spring unstretched, determine the velocity of wheel A just as the door reaches the vertical position,