Bài 6 Cho c� hệ như hình 16 Hãy tính ph ả n l ự c liên k � t t � i A B C D D C

Bài 6 cho c? hệ như hình 16 hãy tính ph ả n

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Bài 6. Cho cơ hệ như hình 1.6. Hãy tính ph n l c liên k ế t t i A, B, C, D.
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D C a a a P = 2qa A 2a M = 2qa 2 q a a E F B 45 o Bài 7. Cho cơ hệ như hình 1.7. Hãy tính ph n l c liên k ế t t i A, B, C, D. D a B a A C E F a a a 2q 45 o M = 2qa 2
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Bài 8. Cho cơ hệ như hình 1.8 . Hãy tính ph n l c liên k ế t t i A, B, C, D. Bài 9. Cho h ph ng g m khung ABCD liên k ế t kh p v ới thanh ED như hình 1.9. Xác đị nh các ph n l c t i A, C, D, E. Bài 10. Cho h ph ng g m khung ABCD liên k ế t kh p v ới thanh ED như hình 1.10. Xác đị nh các ph n l c t i A, C, D, E. a B C D M = 3qa 2 a/2 a/2 a/2 a/2 P = 2qa A 2q a/2 a a a a 2q a A B C D E
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Bài 11. Cho h ph ng g m khung ABCD ch u các liên k ết như hình 1.11 . Xác đị nh các ph n l c t i A, C a a a 2q A B C D E a a a 3q A B C D
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Bài 12. Cho cơ cấ u g m khung ABCDH liên k ế t v i thanh DE b ng kh p b n l t i D như hình v . Hãy tính các ph n l c liên k ế t t i A, D, E. Cho AG = GC = BC = CD = DH = a. Bài 13. Cho h ph ng g m khung ABC liên k ế t kh p v ới thanh CD như hình 1.13. Hãy tính các phả n l c liên k ế t t i A, C, D. Bài 14. Cho cô heä coù lieân keát vaø chòu löïc nhö hình 1.14. Bieát: q, , P = q , M = q 2 , = 60 0 . Boû qua troïng löôïng cuûa caùc vaät vaø ma saùt trong heä. 1 4 P qa 2 2 P qa 2 2 M qa A B C D E H 0 45 G 0 45 q D C a a a A 2a M = qa 2 q a E B P = 2qa 45 0 C B A D q 2 M Hình 1.14 Hình 1.12
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