Two blocks A and B of masses 3 m 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

Question

Two blocks A and B of masses 3 m 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, g , g 3, g 3 , g, g , g, g 3 , g 3

MARKS App · Accepted Answer

Before the string is cut, tension is acting in the string in downward position. k x = T + 3 m g ......(i) T = m g ......(ii) ⇒ k x = 4 m g After the string is cut, T = 0 a = k x - 3 m g 3 m a = 4m g - 3 m g 3 m Acceleration of A is a = g 3 ↑ and acceleration of B is a = mg m = g ↓ .

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