What's up everyone? I have a question regarding a flashcard within the study set below. This is a mechanical comprehension review set and has popped up on airwarriors multiple times.
https://www.proprofsflashcards.com/story.php?title=astb-mechanical-comprehension-test
View attachment 35998
Assuming the answer choices are read left to right, the pully system to the left (choice A) is the indicated correct answer. I'm having a hard time understanding why and am actually coming to the opposite conclusion when completing the FB diagram/Newton's first. For example, I calculated the rope tensions as follows,
Tension A = mgsinθ
Tension B = (mgsinθ)/2
So, as I interpret this Tension A = 2Tension B and the answer should be B. What am I doing wrong here?