For block \( B \) (20 kg), the forces are:
- Weight (\( W_B \)) = \( 20 \times 9.8 \) N
- Normal force (\( N \))
- Friction force (\( f \))
- Tension in the rope (\( T \))
For block \( A \), the forces are:
- Weight (\( W_A \)) = \( m_A \times 9.8 \) N
- Tension
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