Physics 9702 · AS & A Level · Equilibrium of forces

Equilibrium of forces — practice question

The diagram illustrates an experiment for determining the force acting on a ball due to a horizontal stream of air. The ball hangs from a light string and has a weight of $0.15\,\text{N}$. The string is deflected by $30^{\circ}$ from the vertical. What is the force on the ball caused by the air flow?

  • A$0.075\,\text{N}$
  • B$0.087\,\text{N}$
  • C$0.26\,\text{N}$
  • D$0.30\,\text{N}$

Worked solution & mark scheme

This 1-mark question has a full step-by-step worked solution and mark scheme.

  • Full mark scheme, point by point
  • Step-by-step worked solution
  • Write your answer & get it marked instantly by AI