3.20 Determine the moment about the origin O of the force F = 4i + 10j + 6k that acts at a point A. Assume that the position vector of A is (a) r = 2i − 3j + 4k, (b) r = 2i + 6j + 3k, (c) r = 2i + 5j + 6k. 3.4 A 300-N force is applied at A as shown. Determine (a) the moment of the 300-N force about D, (b) the smallest force applied at B that creates the same moment about D. Answer 200 mm 25° 300 N A 100 mm- 200 mm D 125 mm C B

3.20 Determine the moment about the origin O of the force F = 4i + 10j + 6k that acts at a point A. Assume that the position vector of A is (a) r = 2i − 3j + 4k, (b) r = 2i + 6j + 3k, (c) r = 2i + 5j + 6k. 3.4 A 300-N force is applied at A as shown. Determine (a) the moment of the 300-N force about D, (b) the smallest force applied at B that creates the same moment about D. Answer 200 mm 25° 300 N A 100 mm- 200 mm D 125 mm C B

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter29: Dc Generators

Section: Chapter Questions

Problem 1PA: You are working as an electrician in a large steel manufacturing plant, and you are in the process...

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