Two masses of 4 kg and 5 kg are connecte

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Two masses of $4\, kg$ and $5 \,kg$ are connected by a string passing through a frictionless pulley and are kept on a frictionless table as shown in the figure. The acceleration of $5\, kg$ mass is  ........... $m/s^2$

A

$49$

B

$5.44$

C

$19.5$

D

$2.72$

Two masses of $4\, kg$ and $5 \,kg$ are connected by a string passing through a frictionless pulley and are kept on a frictionless table as shown in the figure. The acceleration of $5\, kg$ mass is  ........... $m/s^2$

$a = \frac{{{m_2}}}{{{m_1} + {m_2}}} \times g = \frac{5}{{4 + 5}} \times 9.8 = \frac{{49}}{9} = 5.44\;m/{s^2}$