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3. Dot Product

# 3. Dot Product - ME 270 Basic Mechanics I Group Quiz...

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Unformatted text preview: ME 270 - Basic Mechanics I - Group Quiz Name/Group #: ___.___.___ Gmup Members: 1) __ 2) Date: ______. Period: _.___ 3) _ 4) Given: A mast is restrained by three cables as shown. The ten- sion in cable CE is 2kN. Find: (a) Estimate the angle between cables CE and CD. (b) Use the dot product to determine the angle between cables CE and CD. (c) Wn'te force vector FCE. (d) Determine the projection of PCB 1n the direction of CD. Express the projection as a vector. S_9_____lution: {a} ENGE. EeTIMATE' 9 ”45° (in) rig-=4? 8km IEEI=[-4) 4)'"+(8)‘]= {7... 7:1, = —5 3187(7)»: If.) [=[6-5)L+(“8)j=1§7nn e=cos c5 _—= o§[4~:0 83%: 77812)?) 7's] IV“ [7+7 = ...
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3. Dot Product - ME 270 Basic Mechanics I Group Quiz...

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