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Xfinity Mobile 9:36 AM 53% HW3 Done 2. The angular acceleration of the centrifuge arm varies according to Ö = (0.05 0) rad/s² where is measured in radians. (a) If the centrifuge starts from rest, determine the acceleration magnitude after the gondola has travelled two full rotations. (b) What would happen if you designed the centrifuge so that the arm could extend from 6 to 10 meters? Answer | (a) a = 63.365 m/s² 8 m A 3. Determine the maximum theoretical speed that may be achieved over a distance of 60 m by a car starting from rest, knowing that the coefficient of static friction is 0.80 between the tires and the pavement and that 60 percent of the weight of the car is distributed over its front wheels and 40 percent over its rear wheels. Assume (a) four-wheel drive, (b) front-wheel drive, (c) rear-wheel drive. = = 69.9 km/h Answer (a) v 110.5 km/h; (b) v = 85.6 km/h; (c) v = 4. If an automobile's braking distance from 90 km/h is 45 m on level pavement, determine the automobile's braking distance from 90 km/h when it is (a) going up a 5° incline and (b) going down a 3% incline. Assume the braking force is independent of grade. Answer (a) xf- x0 = 40.1 m; (b) xf-x0 = 47.0 m 5. The two blocks shown are originally at rest. Neglecting the masses of the pulleys and the effect of friction in the pulleys and between block A and the incline, determine (a) the acceleration of each block: and (b) the tension in the cable. Q +

Xfinity Mobile 9:36 AM 53% HW3 Done 2. The angular acceleration of the centrifuge arm varies according to Ö = (0.05 0) rad/s² where is measured in radians. (a) If the centrifuge starts from rest, determine the acceleration magnitude after the gondola has travelled two full rotations. (b) What would happen if you designed the centrifuge so that the arm could extend from 6 to 10 meters? Answer | (a) a = 63.365 m/s² 8 m A 3. Determine the maximum theoretical speed that may be achieved over a distance of 60 m by a car starting from rest, knowing that the coefficient of static friction is 0.80 between the tires and the pavement and that 60 percent of the weight of the car is distributed over its front wheels and 40 percent over its rear wheels. Assume (a) four-wheel drive, (b) front-wheel drive, (c) rear-wheel drive. = = 69.9 km/h Answer (a) v 110.5 km/h; (b) v = 85.6 km/h; (c) v = 4. If an automobile's braking distance from 90 km/h is 45 m on level pavement, determine the automobile's braking distance from 90 km/h when it is (a) going up a 5° incline and (b) going down a 3% incline. Assume the braking force is independent of grade. Answer (a) xf- x0 = 40.1 m; (b) xf-x0 = 47.0 m 5. The two blocks shown are originally at rest. Neglecting the masses of the pulleys and the effect of friction in the pulleys and between block A and the incline, determine (a) the acceleration of each block: and (b) the tension in the cable. Q +

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
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Xfinity Mobile 9:36 AM 53% HW3 Done 2. The angular acceleration of the centrifuge arm varies according to Ö = (0.05 0) rad/s² where is measured in radians. (a) If the centrifuge starts from rest, determine the acceleration magnitude after the gondola has travelled two full rotations. (b) What would happen if you designed the centrifuge so that the arm could extend from 6 to 10 meters? Answer | (a) a = 63.365 m/s² 8 m A 3. Determine the maximum theoretical speed that may be achieved over a distance of 60 m by a car starting from rest, knowing that the coefficient of static friction is 0.80 between the tires and the pavement and that 60 percent of the weight of the car is distributed over its front wheels and 40 percent over its rear wheels. Assume (a) four-wheel drive, (b) front-wheel drive, (c) rear-wheel drive. = = 69.9 km/h Answer (a) v 110.5 km/h; (b) v = 85.6 km/h; (c) v = 4. If an automobile's braking distance from 90 km/h is 45 m on level pavement, determine the automobile's braking distance from 90 km/h when it is (a) going up a 5° incline and (b) going down a 3% incline. Assume the braking force is independent of grade. Answer (a) xf- x0 = 40.1 m; (b) xf-x0 = 47.0 m 5. The two blocks shown are originally at rest. Neglecting the masses of the pulleys and the effect of friction in the pulleys and between block A and the incline, determine (a) the acceleration of each block: and (b) the tension in the cable. Q +
Transcribed Image Text:Xfinity Mobile 9:36 AM 53% HW3 Done 2. The angular acceleration of the centrifuge arm varies according to Ö = (0.05 0) rad/s² where is measured in radians. (a) If the centrifuge starts from rest, determine the acceleration magnitude after the gondola has travelled two full rotations. (b) What would happen if you designed the centrifuge so that the arm could extend from 6 to 10 meters? Answer | (a) a = 63.365 m/s² 8 m A 3. Determine the maximum theoretical speed that may be achieved over a distance of 60 m by a car starting from rest, knowing that the coefficient of static friction is 0.80 between the tires and the pavement and that 60 percent of the weight of the car is distributed over its front wheels and 40 percent over its rear wheels. Assume (a) four-wheel drive, (b) front-wheel drive, (c) rear-wheel drive. = = 69.9 km/h Answer (a) v 110.5 km/h; (b) v = 85.6 km/h; (c) v = 4. If an automobile's braking distance from 90 km/h is 45 m on level pavement, determine the automobile's braking distance from 90 km/h when it is (a) going up a 5° incline and (b) going down a 3% incline. Assume the braking force is independent of grade. Answer (a) xf- x0 = 40.1 m; (b) xf-x0 = 47.0 m 5. The two blocks shown are originally at rest. Neglecting the masses of the pulleys and the effect of friction in the pulleys and between block A and the incline, determine (a) the acceleration of each block: and (b) the tension in the cable. Q +
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