The motor at B supplies a constant torque M which is applied to a 325-mm-diameter internal drum around which is wound the cable shown. This cable then wraps around a pulley which has a mass of 72 kg and is attached to a cart which has a mass of 120 kg carrying 640 kg of rock. The motor is able to bring the loaded cart to a cruising speed of 1.8 m/s in 4 seconds. What torque M is the motor able to supply, and what is the average value of the tension in each side of the cable which is wrapped around the pulley at O during the speed-up period? The cable does not slip on the pulley and the centroidal radius of gyration of the pulley is 385 mm. What is the power output of the motor when the cart reaches its cruising speed? 650 mm A 15° Answers: M= Ttop i Nom N Tbot= N P = kW B
The motor at B supplies a constant torque M which is applied to a 325-mm-diameter internal drum around which is wound the cable shown. This cable then wraps around a pulley which has a mass of 72 kg and is attached to a cart which has a mass of 120 kg carrying 640 kg of rock. The motor is able to bring the loaded cart to a cruising speed of 1.8 m/s in 4 seconds. What torque M is the motor able to supply, and what is the average value of the tension in each side of the cable which is wrapped around the pulley at O during the speed-up period? The cable does not slip on the pulley and the centroidal radius of gyration of the pulley is 385 mm. What is the power output of the motor when the cart reaches its cruising speed? 650 mm A 15° Answers: M= Ttop i Nom N Tbot= N P = kW B
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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
Transcribed Image Text:The motor at B supplies a constant torque M which is applied to a 325-mm-diameter internal drum around which is wound the cable
shown. This cable then wraps around a pulley which has a mass of 72 kg and is attached to a cart which has a mass of 120 kg carrying
640 kg of rock. The motor is able to bring the loaded cart to a cruising speed of 1.8 m/s in 4 seconds. What torque M is the motor able
to supply, and what is the average value of the tension in each side of the cable which is wrapped around the pulley at O during the
speed-up period? The cable does not slip on the pulley and the centroidal radius of gyration of the pulley is 385 mm. What is the power
output of the motor when the cart reaches its cruising speed?
Answers:
M =
650 mm
15°
i
N⚫m
Ttop=
N
Tbot =
i
N
P =
i
kW
B
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