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2 marksHydrostatics

CSEC Physics · 1998 · Paper 2 · Question 5(b)

In terms of the forces acting on each object, explain why a tree floats in water while a nail sinks, even though the tree is much heavier.

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Other parts of this question

  1. 5(a)State Archimedes' principle.[2 marks]
  2. 5(c)(i)Use the readings from Figure 6 to find the volume of the rock in cm^3.[3 marks]
  3. 5(c)(ii)State the volume of the rock in m^3 (given 1 m^3 = 1 x 10^6 cm^3).[1 mark]
  4. 5(c)(iii)Given the rock has a mass of 0.12 kg, find its density in kg m^-3.[3 marks]
  5. 5(c)(iv)Determine whether the rock would float or sink in bromoform (density 4000 kg m^-3). Explain your answer.[2 marks]
  6. 5(d)State what change, if any, occurs in the mass, weight, and density of a piece of rock taken from the Moon to the Earth.[3 marks]

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