Physics 5054 · O Level · Turning effect of forces

Turning effect of forces — practice question

A metre rule of uniform composition is in equilibrium under a $4.0\,\text{N}$ weight, as illustrated. What is the weight $W$ of the metre rule?

  • A$1.0\,\text{N}$
  • B$4.0\,\text{N}$
  • C$16\,\text{N}$
  • D$40\,\text{N}$

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