Selected HW #3 Answers - Auburn Universitydmbevly/mech3140/hw3_sol.pdfSelected HW #3 Answers 4.4 2 1...
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Selected HW #3 Answers 4.4 2 1 2 3 2 2 2 1 L L k L k k e + = 4.5 k k e 36 29 = 4.6 2 1 2 1 k k k k k e + = , i i i L EA k = 4.13 0 2 1 2 = + x R R k x m 4.14 0 ) cos( ) sin( 2 2 2 1 = + θ θ θ kD mD 4.15 0 ) sin( ) ( 2 = + + θ θ mgD mD I CG 4.16 0 ) ( 2 2 1 = + + x kR x R m I 4.17 1 2 2 2 2 2 2 2 1 2 1 1 1 ) ( x k f x k x m x k x k k x m + = + = + + 4.22 ) ( ) ( ) ( 1 2 1 s k k Is k s s + + = φ θ 4.23 ky kx x R I m = + + 2 4.24 1 2 2 3 2 2 2 2 2 1 2 1 1 1 ) ( ) ( x k x k k x m x k x k k x m = + + = + + 4.25 1 2 2 2 3 2 2 2 2 2 1 2 1 1 1 ) ( ) ( θ θ θ θ θ θ k T k k I k k k I + = + + = + + 4.26
Transcript of Selected HW #3 Answers - Auburn Universitydmbevly/mech3140/hw3_sol.pdfSelected HW #3 Answers 4.4 2 1...
Selected HW #3 Answers
4.4 21
232
221
LLkLk
ke+
=
4.5 kke 3629
=
4.6 21
21
kkkkke +
= , i
ii L
EAk =
4.13 02
1
2 =
+ x
RRkxm
4.14 0)cos()sin(2
22
1 =+ θθθ kDmD 4.15 0)sin()( 2 =++ θθ mgDmDICG
4.16 0)( 22
1 =++ xkRxRmI
4.17 122222
2212111 )(xkfxkxm
xkxkkxm+=+=++
4.22 )()(
)(
12
1
skkIsk
ss
++=
φθ
4.23 kykxxRIm =+
+
2
4.24 1223222
2212111
)()(
xkxkkxmxkxkkxm
=++=++
4.25 12223222
2212111
)(
)(
θθθ
θθθ
kTkkI
kkkI
+=++
=++
4.26
4.30 0)( 212 =++
+ xkkx
RIm
4.32 044 221 =+
++ kxx
RImm
4.56 pTdTdd
TpTpTpp
ccI
kkcI
θθθ
φθθθ
=+
+=++