The drag force on a small sphere depends on eta, r and v: F = keta^ar^bv^c. Then

  1. a = 2, b = 1, c = 1
  2. a = 1, b = 2, c = 1
  3. a = 1, b = 1, c = 2
  4. a = b = c = 1
Answer

D) a = b = c = 1

MLT^-2 = ( ML^-1T^-1)^a L^b( LT^-1)^c: M: a = 1; T: -a - c = -2 Rightarrow c = 1; L: -a + b + c = 1 Rightarrow b = 1. (Stokes' law, k = 6pi.) SLO P-11-A-04 · Application

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