Question

while passing nearby a pond, some student saw a drowning man screaming for help. They alerted another passerby, who immediately threw an inflated rubber tube in the pond. The man was saved. (๐ข) Why did the passerby use inflated rubber tube to save the drowning man? (๐ข๐ข) Write the principle involved here. (๐ข๐ข๐ข) Which qualities shown by the students and the passerby do you identify that helped in saving the drowning man?

  • flotation CBSE Class 9
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Answer

(i) Inflated rubber tube remain float on water as the magnitude of buoyant force acting on an body immersed in a liquid is equal to weight of liquid displaced by the immersed body.

(ii) Archimedes principle or law of buoyancy or law of floatation.

(iii) Helping and caring nature, awareness towards proper application.

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