Physics 9702 · AS & A Level · Equilibrium of forces

Equilibrium of forces — practice question

A solid sphere moves down through a liquid at constant (terminal) velocity. The diagram shows the three forces acting on the sphere. What is the relationship between these three forces?

  • A$W + D = U$
  • B$W > U + D$
  • C$W - U = D$
  • D$W < D + U$

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