Answer to Question #290534 in Mechanical Engineering for Anu

Question

Determine the angle which the string would make with the horizontal,whan weights of the blocks A and B are such that

(a)WA=WB=W and

(b)WA=W,WB=2W.

Answer 1

1. Analyzing vertical forces where string 1 and string 2 meet, we find

$T_1 =\frac{W_A}{cos\phi}$ N

2. Looking at the horizontal forces at that point leads to 

$T_2 =T_1Sin \theta$ N

3.The angle of the string 

$\theta =tan^{-1}\frac{T_2}{T_1}$