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Jika AB = BC = CD = 40 cm hitunglah momen gaya di titik A!

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Jika AB = BC = CD = 40 cm hitunglah momen gaya di titik A!space 

A. Aulia

Master Teacher

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diketahui colon straight F subscript 1 equals 40 space straight N straight theta subscript 1 equals space 37 degree straight F subscript 2 equals 60 space straight N straight theta subscript 2 equals 53 degree straight F subscript 3 equals 20 space straight N straight theta subscript 3 equals space 90 degree straight F subscript 4 equals 40 space straight N straight theta subscript 4 equals space 0 degree straight R subscript AB equals straight R subscript BC equals straight R subscript CD equals space 40 space cm equals 0 comma 4 space straight m  ditanya colon straight tau subscript straight A ?  jawab colon straight tau subscript straight A equals straight tau subscript 1 plus straight tau subscript 2 plus straight tau subscript 3 plus straight tau subscript 4 straight tau subscript straight A equals 0 plus straight F subscript 2. space sin space 53.0 comma 4 plus straight F subscript 3. space sin space 90 degree. space 0 comma 8 space minus straight F subscript 4. space sin space 90 degree. space 1 comma 2 straight tau subscript straight A equals left parenthesis 60 cross times space 0 comma 8 cross times 0 comma 4 right parenthesis plus left parenthesis 20 cross times 1 cross times 0 comma 8 right parenthesis minus left parenthesis 40 cross times 1 cross times 1 comma 2 right parenthesis straight tau subscript straight A equals 19 comma 2 plus 16 minus 48 straight tau subscript straight A equals negative 12 comma 8 space Nm

 

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