Physics Tutorial 6.1 - Centre of Mass. Types of Equilibrium Revision Questions

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Centre of Mass and Linear Momentum Learning Material
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6.1Centre of Mass. Types of Equilibrium

Centre of Mass. Types of Equilibrium Revision Questions

1) Four objects are hanged on strings as shown in the figure and initially they are not allowed to move.

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Which object will move after being released?

  1. Object A
  2. Object B
  3. Object C
  4. Object D

Correct Answer: D

2) What are the coordinates of the centre of mass of the object shown in the figure below if xO = 6 units and zO = 21 units? Write the coordinates of centre of mass in the format (xC, yC, zC).

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  1. (6, 6, 21)
  2. (6, 0, 7)
  3. (6, 6, 7)
  4. (6, 6, 14)

Correct Answer: C

3) Four objects, A, B, C and D are at rest on the same horizontal plane as shown below.

Physics Tutorials: This image provides visual information for the physics tutorial Centre of Mass. Types of Equilibrium

A strong earthquake occurs and the objects start topple over one by one. Which is the order of their toppling occurrence starting from the earliest?

  1. D - C - A - B
  2. B - C - A - D
  3. D - A - C - B
  4. C - D - A - B

Correct Answer: C

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