Laws Of Motion Question 164
Question: A light string passing over a smooth light pulley connects two blocks of masses $ m _{1} $ and $ m _{2} $ (vertically). If the acceleration of the system is g/8 then the ratio of the masses is[AIEEE 2002]
Options:
A) 8 : 1
B) 9 : 7
C) 4 : 3
D) 5 : 3
Show Answer
Answer:
Correct Answer: B
Solution:
$ a=( \frac{m _{1}-m _{2}}{m _{1}+m _{2}} )g $
therefore $ \frac{g}{8}=( \frac{m _{1}-m _{2}}{m _{1}+m _{2}} )g $
therefore $ \frac{m _{1}}{m _{2}}=\frac{9}{7} $
