A wall bracket consisting of bars AB, AC and AD as shown in the fig 3 are joined must be assumed correctly. The force in the member AB is tension and in the members AC and d AD are compression,

A wall bracket consisting of bars AB, AC and AD as shown in the fig 3

1.	A wall bracket consisting of bars AB, AC and AD as shown in the fig 3 are joined must be assumed correctly. The force in the member AB is tension and in the members AC and d AD are compression,
Answer» TION:∣AB∣ =a, ∣AD∣ =b= ∣BC∣ , ∣AC∣ =CAB . AC = ∣AB∣ ∣ AC ∣cos( AB , AC )⇒a×c× 2aca 2 +b 2 −c 2 ⇒ 2a 2 +b 2 −c 2

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A wall bracket consisting of bars AB, AC and AD as shown in the fig 3 are joined must be assumed correctly. The force in the member AB is tension and in the members AC and d AD are compression,​

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A wall bracket consisting of bars AB, AC and AD as shown in the fig 3 are joined must be assumed correctly. The force in the member AB is tension and in the members AC and d AD are compression,