anonymous
  • anonymous
5 The diagram shows an experiment to measure the force exerted on a ball by a horizontal air flow. The ball is suspended by a light string and weighs 0.15N. The deflection of the string from vertical is 30°. What is the force on the ball from the air flow? A 0.075N B 0.087N C 0.26N D 0.30N
Physics
  • Stacey Warren - Expert brainly.com
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katieb
  • katieb
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anonymous
  • anonymous
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anonymous
  • anonymous
The answer is B
anonymous
  • anonymous
But howw??

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anonymous
  • anonymous
That's easy. There is tension in the string and it should balance both-the weight of the string and the force due to the air flow. You should now be to draw the following diagram.|dw:1370784897529:dw| F is the force due to the air. W is the weight. Balance the forces in the horizontal and vertical directions Tsin30 = F Tcos30 = W Divide these two equations and solve for F (W is given).

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