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Physics · May / June 2018 · Paper 12 · Question 7

5054Turning effect of forces

A uniform rod of weight 5.0 N is held initially at rest. The diagram shows the forces acting on the rod when it is released. [diagram: uniform rod with forces 10 N upwards at centre, 5.0 N downwards at centre, 2.0 N downwards at left end, 3.0 N downwards at right end] What happens to the rod when it is released?

  1. AIt does not move.
  2. BIt moves to the right.
  3. CIt moves upwards.
  4. DIt starts to rotate.

As printed in the paper

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Correct answer: D. It starts to rotate.

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