2-1 A structural thin plate ABCD of negligible mass is supported and loaded as shown. a) For a 2-dimensional rigid body such as plate ABCD, explain the concept of direction for the moment of a force about a given point... b) Determine (i) the moment of the 15-N force about point B, (ii) the moment of the 20-N force about point C. Express all of the answers in N.m. c) Without any detailed calculation, assess the moment of the 15-N force about point C as compared to point B and justify your judgment. [b) (i) MB = 2.7k N-m or 2.7 N-m CCW; (ii) Mc=-1.8k N-m; or 1.8 N-m CW 20 N | 15 N Figure D 120 mm →→→→ 60 mm P2-1 ↑ 90 mm

2-1 A structural thin plate ABCD of negligible mass is supported and loaded as shown. a) For a 2-dimensional rigid body such as plate ABCD, explain the concept of direction for the moment of a force about a given point... b) Determine (i) the moment of the 15-N force about point B, (ii) the moment of the 20-N force about point C. Express all of the answers in N.m. c) Without any detailed calculation, assess the moment of the 15-N force about point C as compared to point B and justify your judgment. [b) (i) MB = 2.7k N-m or 2.7 N-m CCW; (ii) Mc=-1.8k N-m; or 1.8 N-m CW 20 N | 15 N Figure D 120 mm →→→→ 60 mm P2-1 ↑ 90 mm

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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