Solution manual for statics and mechanics of materials 1st edition by goodno

May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.. May not be scanned, copied or duplicated, or posted to a publicly accessible w

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a( ) FmoonE G mearth mmoon

c( ) FmarsE 8.244 10  13kN ( ) FsaturnE 1.586 10d   14kN

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Fearth G mearth mman

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 Sum and difference vectors have

equal/opposite lines of action(collinear, see fig.'s below) sosum/difference of magnitudes are equal

to sum/diff of magnitudes of eachvector

0.555

0.832

0.555

0.832

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Problem 1.3-4

Vector sum Unit vector along V1 dot product of Vs along n1 is V1 vector difference gives V2

Vs

48

7

0

7

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Problem 1.3-5

V1

573

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Problem 1.3-7

From Prob 1.3-6 nCA

0.453

0.8150.362

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Problem 1.3-9

F1x  (13lbf) cos 30deg ( ) 11.26 lbf F1y  (13 lbf )sin 30deg( ) 6.5lbfF2x  (15lbf) cos 45deg ( ) 10.61 lbf F2y  (15lbf) sin 45deg ( ) 10.61 lbf

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Problem 1.3-10

F

60120

12.5

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Problem 1.4-2

mc  (58 14) kg 72 kg 72

14.5939 4.93 mc 4.93 slug  Wc  mc g 158.7 lbf

4.93( ) 32.2( )158.746

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Problem 1.4-5

W  15lbf mUSCS  Wg 0.466 slug mSI  Wg 6.8 kg

1532.2  0.466 15 4.44822( )

9.807  6.804

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