KVPY SX SB Exam 2012 Question Paper

Question : 37 of 120

Marks: +1, -0

A particle released from rest is falling through a thick fluid under gravity. The fluid exerts a resistive force on the particle proportional to the square of its speed. Which one of the following graphs best depicts the variation of its speed v with time t?

Validate

Solution:

\mg'-\kv^2=\mdv/\dt

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