Physics 9702 · AS & A Level · Equilibrium of forces

Equilibrium of forces — practice question

An object is suspended using two cords wrapped around two rods, as illustrated. The object is in equilibrium under the action of the forces $F_1$ and $F_2$. The object has a weight of $10\,\text{N}$. Friction between the rods and the cords is negligible. Angle $\theta$ is $90^{\circ}$. Which row in the table gives an angle $\theta$ of $90^{\circ}$?

  • A$F_1 = 4.0\,\text{N}$, $F_2 = 6.0\,\text{N}$
  • B$F_1 = 6.0\,\text{N}$, $F_2 = 4.0\,\text{N}$
  • C$F_1 = 6.0\,\text{N}$, $F_2 = 8.0\,\text{N}$
  • D$F_1 = 8.0\,\text{N}$, $F_2 = 6.0\,\text{N}$

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