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

Pertanyaan

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

A. Aulia

Master Teacher

Jawaban terverifikasi

Pembahasan

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 B ?  jawab colon straight tau subscript straight B equals straight tau subscript 1 plus straight tau subscript 2 plus straight tau subscript 3 plus straight tau subscript 4 straight tau subscript straight B equals straight F subscript 1. sinθ. straight o comma 8 minus straight F subscript 2. sinθ.0 comma 4 plus 0 space minus straight F subscript 4. space sin space 90 degree. space 0 comma 4 straight tau subscript straight B equals left parenthesis 40 cross times space 0 comma 6 cross times 0 comma 8 right parenthesis minus left parenthesis 60 cross times 0 comma 8 cross times 0 comma 4 right parenthesis minus left parenthesis 40 cross times 1 cross times 0 comma 4 right parenthesis straight tau subscript straight B equals 19 comma 2 plus 19 comma 2 minus 16 straight tau subscript straight B equals 22 comma 4 space Nm 

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Batang AD massanya diabaikan bekerja tiga buah gaya seperti gambar berikut. AB=BC=CD= 1 m Hitung besar momen gaya yang bekerja pada batang jika poros rotasi di D!

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