Physics 5054 · O Level · Turning effect of forces

Turning effect of forces — practice question

A beam of uniform mass is hinged at its midpoint. Two weights are positioned on the beam as shown, and an upward force $F$ keeps the beam in equilibrium. What is the magnitude of $F$?

  • A6.0 N
  • B12 N
  • C30 N
  • D60 N

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