Question

Three masses of $15kg$, $10kg$ and $5kg$ are suspended vertically as shown in the figure. If the string attached to the support breaks and the system falls freely, what will be the tension in the string between $10kg$ and $5kg$ masses. Take $g=10m/s^2$. It is assumed that the string remains tight during the motion.

• A. $250$
• B. $300$
  
• C. $50$
  
• D. $0$
  

Answer 1

Answer: (D)

$0$

When string attached to support breaks then all three masses will move downwards due to gravity that is they will move with same acceleration with value equal to g.Hence there will no tension in string.