Figure P18.14 shows a 1000-kg mass being lowered by a cable at a uniform rate of 4 m/s from a drum of 550-mm diameter weighing 2.5 kN and having a 250-mm radius of gyration. (a) What is the kinetic energy in the system? (b) The uniform rate of descent is maintained by a brake on the drum which applies a torque of 2698 N m. What additional brake torque is required to bring the system to rest in 0.60 s? 4m/s 1000 kg (d) FIGURE P18.14 Ans. Part a.) 9685 J Part b.) 2219 Nm

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
icon
Related questions
Question

use dynamics to solve not energy method, don't solve 1/2KE way. only dynamics for F=ma

Figure P18.14 shows a 1000-kg mass being lowered by a cable at a uniform
rate of 4 m/s from a drum of 550-mm diameter weighing 2.5 kN and having
a 250-mm radius of gyration.
(a) What is the kinetic energy in the system?
(b) The uniform rate of descent is maintained by a brake on the drum
which applies a torque of 2698 N m. What additional brake torque is
required to bring the system to rest in 0.60 s?
4m/s
1000 kg
(d)
FIGURE P18.14
Ans.
Part a.) 9685 J
Part b.) 2219 Nm
Transcribed Image Text:Figure P18.14 shows a 1000-kg mass being lowered by a cable at a uniform rate of 4 m/s from a drum of 550-mm diameter weighing 2.5 kN and having a 250-mm radius of gyration. (a) What is the kinetic energy in the system? (b) The uniform rate of descent is maintained by a brake on the drum which applies a torque of 2698 N m. What additional brake torque is required to bring the system to rest in 0.60 s? 4m/s 1000 kg (d) FIGURE P18.14 Ans. Part a.) 9685 J Part b.) 2219 Nm
Expert Solution
steps

Step by step

Solved in 2 steps with 1 images

Blurred answer
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
Elements Of Electromagnetics
Elements Of Electromagnetics
Mechanical Engineering
ISBN:
9780190698614
Author:
Sadiku, Matthew N. O.
Publisher:
Oxford University Press
Mechanics of Materials (10th Edition)
Mechanics of Materials (10th Edition)
Mechanical Engineering
ISBN:
9780134319650
Author:
Russell C. Hibbeler
Publisher:
PEARSON
Thermodynamics: An Engineering Approach
Thermodynamics: An Engineering Approach
Mechanical Engineering
ISBN:
9781259822674
Author:
Yunus A. Cengel Dr., Michael A. Boles
Publisher:
McGraw-Hill Education
Control Systems Engineering
Control Systems Engineering
Mechanical Engineering
ISBN:
9781118170519
Author:
Norman S. Nise
Publisher:
WILEY
Mechanics of Materials (MindTap Course List)
Mechanics of Materials (MindTap Course List)
Mechanical Engineering
ISBN:
9781337093347
Author:
Barry J. Goodno, James M. Gere
Publisher:
Cengage Learning
Engineering Mechanics: Statics
Engineering Mechanics: Statics
Mechanical Engineering
ISBN:
9781118807330
Author:
James L. Meriam, L. G. Kraige, J. N. Bolton
Publisher:
WILEY