Moments, levers and gears

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Question 28
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Figure 1 shows three decorative shapes hanging from a light horizontal rod.

The rod is suspended from the ceiling by a vertical thread tied exactly to its center. The entire system is in equilibrium.

A scientific diagram showing a uniform horizontal rod suspended from its center by a thin thread. On the left side of the central pivot, a toy star of mass 15.0 g hangs at a distance of 12.0 cm, and a toy moon of mass 6.0 g hangs at a distance of 8.0 cm. On the right side of the pivot, a toy cloud of unknown mass hangs at a distance of 15.0 cm. The system is horizontal and balanced.

Use the principle of moments to calculate the mass of the toy cloud.

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Moments, levers and gears Questions

  1. GCSE
  2. /Physics
  3. /Moments, levers and gears