Exercicios resolvidos mecanica vetorial para engenheiros
19662 palavras
79 páginas
COSMOS: Complete Online Solutions Manual Organization SystemChapter 2, Solution 1.
(a)
(b)
We measure:
R = 37 lb, α = 76° R = 37 lb
76° !
Vector Mechanics for Engineers: Statics and Dynamics, 8/e, Ferdinand P. Beer, E. Russell Johnston, Jr., Elliot R. Eisenberg, William E. Clausen, David Mazurek, Phillip J. Cornwell © 2007 The McGraw-Hill Companies.
COSMOS: Complete Online Solutions Manual Organization System
Chapter 2, Solution 2.
(a)
(b)
We measure:
R = 57 lb, α = 86° R = 57 lb
86° !
Vector Mechanics for Engineers: Statics and Dynamics, 8/e, Ferdinand P. Beer, E. Russell Johnston, Jr., Elliot R. Eisenberg, William E. Clausen, David Mazurek, Phillip J. Cornwell © 2007 The McGraw-Hill Companies. …exibir mais conteúdo…
(b) R = 13.95 lb !
Vector Mechanics for Engineers: Statics and Dynamics, 8/e, Ferdinand P. Beer, E. Russell Johnston, Jr., Elliot R. Eisenberg, William E. Clausen, David Mazurek, Phillip J. Cornwell © 2007 The McGraw-Hill Companies.
COSMOS: Complete Online Solutions Manual Organization System
Chapter 2, Solution 10.
Using the Law of Sines:
60 N 80 N = sin α sin10° or α = 7.4832°
β = 180° − (10° + 7.4832° )
= 162.517°
Then:
R 80 N = sin162.517° sin10° or R = 138.405 N
(a) (b)
α = 7.48° !
R = 138.4 N !
Vector Mechanics for Engineers: Statics and Dynamics, 8/e, Ferdinand P. Beer, E. Russell Johnston, Jr., Elliot R. Eisenberg, William E. Clausen, David Mazurek, Phillip J. Cornwell © 2007 The McGraw-Hill Companies.
COSMOS: Complete Online Solutions Manual Organization System
Chapter 2, Solution 11.
Using the triangle rule and the Law of Sines Have:
β = 180° − ( 35° + 25° )
= 120°
Then:
P R 80 lb = = sin 35° sin120° sin 25°
or (a) P = 108.6 lb ! (b) R = 163.9 lb !
Vector Mechanics for Engineers: Statics and Dynamics, 8/e, Ferdinand P. Beer, E. Russell Johnston, Jr., Elliot R. Eisenberg, William E. Clausen, David Mazurek, Phillip J. Cornwell © 2007 The McGraw-Hill Companies.
COSMOS: Complete Online Solutions Manual Organization System
Chapter 2, Solution 12.
Using the triangle rule and the Law of Sines (a) Have:
80 lb 70 lb = sin