A system of two blocks of masses \( m=2 \mathrm{~kg} \) and \( m=8 \mathrm{~kg} \) is placed on ...

A system of two blocks of masses \( m=2 \mathrm{~kg} \) and \( m=8 \mathrm{~kg} \) is placed on a smooth table as shown in figure. The coefficient of static friction between two blocks is 0.5 . The maximum horizontal force \( F \) that can be applied to the block of mass \( M \) so that the blocks move together will be:
(a) \( 9.8 \mathrm{~N} \)
(b) \( 39.2 \mathrm{~N} \)
(c) \( 49 \mathrm{~N} \)
(d) \( 78.4 \mathrm{~N} \)