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Here mass A will slide down and mass B will move above
Let the Tension in string be T and acceleration of system be a

For mass B
m_Ba = m_Bg*sin(37) - T
For mass A
m_Aa = T - m_Ag*sin(53)

So ,
m_Bg*sin(37) - m_Ba = m_Aa +  m_Ag*sin(53)

10×10×3/5 -10a = 2a + 2×10 ×4/5

60 - 10a = 2a + 16

a = 44/12 =3.67m/s2