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★ DRAW FBD OF BOTH BLOCKS:-
⭐ for block of mass 3kg,
→ f' = 3a............(1)
⭐ for block of mass 2kg,
→ 10N - f' = ma
=> 10N - f' = 2 × 2 ( acceleration = 2m/s²)
=> f' = 6N
putting the value of f' in 1st equation
6 = 3a
a = 2m/s² ✔️
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