19_Problem CHAPTER 10

19_Problem CHAPTER 10 - PROBLEM 10.18 The pin at C is...

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PROBLEM 10.18 The pin at C is attached to member BCD and can slide along a slot cut in the fixed plate shown. Neglecting the effect of friction, derive an expression for the magnitude of the couple M required to maintain equilibrium when the force P which acts at D is directed ( a ) as shown, ( b ) vertically downward, ( c ) horizontally to the right. SOLUTION Have cos D xl θ = sin D δ θδθ =− 3s in D yl = 3cos D = Virtual Work: ( ) ( ) 0: cos sin 0 DD UMP x P y δδ β = −−= ( )( ) ( )( ) cos sin sin 3 cos 0 MP l P l δθ −− = ( ) 3sin cos cos sin
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This note was uploaded on 07/11/2011 for the course EGM 2511 taught by Professor Jenkins during the Spring '08 term at University of Florida.

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