Two blocks A and B of masses 3m and m respectively are connected by a massless and inextensible string. The whole system is suspended by a massless spring as shown in figure. The magnitudes of acceleration of A and B immediately after the string is cut, are respectively :
Answer & explanation
Correct answer: option 3
Before the string is cut
kx = T + 3 mg
t = mg
kx = 4 mg
After the string is cut, T = 0
a = \(\frac{kx - 3 mg}{3 m}\)
a = \(\frac{g}{3}\)
