Two blocks connected by a spring rest on...

Two blocks connected by a spring rest on a smooth horizontal plane as shown in Fig. A constant force `F` start acting on block `m_2` as shown in the figure. Which of the following statements are not correct?

length of spring increases continuousky if `m_(1) gt m_(2)`

blocks start performing `SHM` about centre of mass of the system with increasing amplitude

blocks start performing `SHM` about centre of mass of the system which moved rectilineraly with constant acceleration

acceleration of `m_(2)` is maximum at initial moment of time only

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