Physics 9702 · AS & A Level · Equilibrium of forces

Equilibrium of forces — practice question

The diagrams illustrate two different ways of suspending the same picture. In each case, a string is fixed to the same points on the picture and arranged symmetrically over a nail in a wall. The forces shown are the ones acting on the nail. In diagram 1, the string loop is shorter than it is in diagram 2. Which statement about the magnitude of the forces is correct?

  • A$R_1 = R_2$ and $T_1 = T_2$
  • B$R_1 = R_2$ and $T_1 > T_2$
  • C$R_1 > R_2$ and $T_1 < T_2$
  • D$R_1 < R_2$ and $T_1 = T_2$

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