A-LevelPhysicsForces, density and pressure9702/12 · May/June 2017 · Q111 Mark

In a machine, many couples act on a rotating object as shown. [Figure shows a rotating object with various forces and their distances from the center. Forces are 50 N (at 6.5 cm and 12 cm), 25 N (at edges, 16 N (at 4.0 cm and 10 cm), 30 N (at edges).] What is the resultant torque acting on the rotating object?

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A4.7 Nm

B8.6 Nm

C9.3 Nm

D17.1 Nm

✓ Correct answer

C: 9.3 Nm

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Topic: Forces, density and pressure, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, May/June 2017 Paper 1 Variant 2, question 11.

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