Question

two block of masses M1 and M2 are connected to each other through a light spring. if we push mass m1 with force F and cause acceleration a1 in right Direction. What will be the magnitude of acceleration in M2

Answer 1

I think ur answer b
F=(M1+M2)a
a=F/M1+M2

Answer 2

Let us first draw a diagram to explain the given condition:

According to Newton’s second law, $Force = Mass \times Acceleration$

Force on the body $(M_1) F_1 = m_1 \times a_1$

Force on the body $(M_2) F_2 = m_2 \times a_2$

Total force $F = F_1 + F_2$

$F = m_1 \times a_1 + m_2 \times a_2$

Hence the acceleration of second body $a_{ 2 }=\frac { (F-m_{ 1 }\times a_{ 1 }) }{ m_{ 2 } }$