Physics 5054 · O Level · Balanced and unbalanced forces

Balanced and unbalanced forces — practice question

The diagrams illustrate the forces acting on four identical solid blocks. Every arrow stands for a force of $20\ \text{N}$. Which blocks are in equilibrium?

  • AP and R only
  • BQ and S only
  • CP, Q and R only
  • DP, Q, R and S

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