ch3 example exam

11
ENGR 210 - STATICS - EXAM NO. 1- SEPT. lB. 2009 - Student _ 1. Determine (a) the X, y, & z components of the 900 N force. (b) the angles 8 x 8 YI and 8 z that the 900 N force fonns with the coordinate axes. SKETCH the location of the angles B x ' BY' & B z and the x, y, & z components of the 900 N force. --t / / / / / / / I I I I -:I

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Page 1: ch3 example exam

ENGR 210 - STATICS - EXAM NO. 1- SEPT. lB. 2009 - Student _

1. Determine (a) the X, y, & z components of the 900 N force.(b) the angles 8x• 8YI and 8z that the 900 N force fonns with the coordinate axes.

SKETCH the location of the angles Bx' BY' & Bz and the x, y, & z components of the 900 N force.

--t/

//

//

//

~-------x:.

IIII

-:I

Page 2: ch3 example exam

2. The 12-ft boom AB has a fixed end A. A steel cable is stretched from the free end B of the boom toa point C located on the vertical wall. If the tension in the cable is 380 Ib, determine the moment aboutA of the force exerted by the cable at B.

y

12 ft B

~ x

----- -

Page 3: ch3 example exam

3. A 6- by 12-in. plate is subjected to four loads. Find the resultant of the four loads and the two pointsat which the line of action of the resultant intersects the edge of the plate.

40lb,. 20lbc

r6 in.

-li!#--.I4-6 in. -lD

50lb

Page 4: ch3 example exam

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Page 5: ch3 example exam

ENGR 210- STATICS - EXAM NO.l- SEPT. lB. 2009 - Student _

1. Determine (a) the x, y, & z components of the 900 N force..(b) the angles Bx' By, and B% that the 900 Nforce forms with the coordinate axes.

SKETCH the location of the angles Bx' By. & Bz and the X, y, & z components of the 900 N force.

i '/He /)..} -~-c plc,?~' ~fj ~i

J&I1(J,J '>-- ~vr~ C(j~

-~

//

/

h-.--+-----'.. ®--"1-_ ~~........... lI:iIl---71_---- ~

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Page 6: ch3 example exam

2. The 12-ft boom AB has a fixed end A. A steeJ cable is stretched from the free 'end B of the boom toa point C located on the vertical wall. If the tension in the cable is 380 Ib, determine the moment aboutA of the force exerted by the cable at B.

-/~, 2-0&-

xI--

\~ ~~ ~ ~

IJ1A- ~ 'M X 15c.. ~

~~ ~ r0 kf3e.-

~ ...--- -(Be I ~ C-fJ I Bex ::c:-

~ r f:: ---- J Ie..- 2s /z 0 6 (zsj(,z,) 0- c.J- I-

-1"2- +4:8 -2>-1-1-,8 -:3_ ,2.

Page 7: ch3 example exam

201bC

!6 in.

--llr#-4~EI--6 in:~ D

3. A 6- by 12-in. plate is subjected to four loads. Find the resultant of the four loads and the two pointsat which the line of action of the resultant intersects the edge of the plate.

l~L.UTt~M 11..~ . -4._ 5.01b

40lb4

\ \\._-----

Page 8: ch3 example exam

201bC

I6 in.

-lit#-'~~6in. -JD

50lb

40Ib~

3. A 6- by 12-in. plate is subjected to four loads. 'Find the resultant of the four loads and the two pointsat which the line of action of the resultant intersects the edge of the plate.

[?eu.t T1C1tJ 2]- 50Ib

J "to

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1..-0

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Page 9: ch3 example exam

3. A 6- by 12:-in. plate is sUbjected to four loads. Find the resultant of the four loads and the two pointsat which the line of action of the resultant intersects the edge of the plate.

k~J..t(T7o-u 3 r501b )wv-e ;;(F !3 ~40Ib 20Ib ~o~~ - ~~ C (': ~'Cv)

'~ ~tu>6 in.

-l.E.' .' jD

;T#-~-6in.

501b

l g IlOy.-:.. ~ z,.r3

~-;.4-(" (

4rf,( -I-r; :::. /0, "ll'-0 C

CZd.-~~ I

Page 10: ch3 example exam

.~.

50Ib

3. A -6- by 12-in. plate is subjected to four loads. Find the resultant of the four loads and the two pointsat Wh1ch the line of action of the resultant intersects the edge of the plate. '

l~LUT/"J 4]' 50 lb /nrv-e- :tJ' A 1Ii{)-:ff

'V- ~.Lr"

~ Ib JO lb 46 1P 1'1.zt'~/z--/- UO ~ f ') 't~1 ~

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Page 11: ch3 example exam

4

z~=7 0 t4,Z-cr--)- >0(8 ,<F-5 )

+ZO(/2..)

- 2&,00

4"r~ $O(C~4-i)-SO(iz""ff:;SCI(-t.~ 1l9"'"). =- - ZJ z...,;.

rr- 2#4-=- Z7,87

20lbC -

!~, 6 in.

-lE· ID

irJIC--t-- 6 in.~

401b~

3. A 6-,by 12-in.,plate is subjected to four loads. Find the resultant of the four loads and the two points, at which the line of ac'on of the resultant intersects the edge of the plate.

(j;~4b' =- 4, Z4-

-----..,+-~_.,L_' _ti_;z:.:..l~I