Sunday, July 22, 2012

Physics Form 4: Chapter 3 - Application of Bernoulli principle (WindSurfing)


  • The air flow over the sail causes an increase in pressure on the windward side and a decrease on the leeward side
  • Area of leeward side has a low pressure because of the high speed of the wind.
  • A resultant force acts in the direction of F.
  • This resultant force can be resolved into component to the right and left.
  • The component to the right can be balanced by the surfer who pulls it to the left.
  • Therefore, there exists a resultant force to the front so that the surfer moves to the front.
  • Factors affect the resultant force is the strength of the wind and the shape of the sail. 

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