Two blocks \( A \) and \( B \) of masses \( 3 m \) and \( m \) respectively are connected by a m....

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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
\( \mathrm{P} \)
as shown in figure. the magnitudes of acceleration of \( A \) and \( B \) immediately after the string is cut, are respectively
(1) \( \frac{g}{3}, g \)
(2) \( g, g \)
(3) \( \frac{g}{3}, \frac{g}{3} \)
(4) \( g, \frac{g}{3} \)


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