Three boxes are connected by stretchless strings and are pulled by a force as shown in the figure. Which string has to be the strongest so as not to break?
A) A
B) B
C) C
D) A, B, and C must be equally strong.
E) A and B must be equally strong.

Question

Three boxes are connected by stretchless strings and are pulled by a force  as shown in the figure. Which string has to be the strongest so as not to break?
A) A 
B) B 
C) C 
D) A, B, and C must be equally strong. 
E) A and B must be equally strong.

Quizplus · Accepted Answer

The Answer of  Three boxes are connected by stretchless strings and are pulled by a force  as shown in the figure. Which string has to be the strongest so as not to break?
A) A 
B) B 
C) C 
D) A, B, and C must be equally strong. 
E) A and B must be equally strong.

Three Boxes Are Connected by Stretchless Strings and Are Pulled