Equilibrium Practice Test Answers

Equilibrium Practice Test Answers

MC

  1. C
  2. C
  3. C
  4. C
  5. B
  6. *A – this one is a bit more challenging. You need to do two steps. First find F, then find frictional force.
  7. A
  8. D
  9. A
  10. * the force labeled ‘F’ is 62N. The force it asked for though (at the fulcrum) is actually 146N, which isn’t really an option. Note that to find the force at the fulcrum, you need two steps: first to find force F, then to find the force at the fulcrum.

Written

  1. This is a two step problem. First find one force (by setting the axis of rotation at the other end) then use that to find the remaining force (either the same way with torque, or just vertical forces balanced. The answer is A = 830 N and B = 370 N
  2. 363 N
  3. 3.4 kg (two steps, but no torque. just translational)
  4. 195 N
  5. 1 because it has the smallest perpendicular component.
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