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On a banked road with angle θ, the ideal (frictionless) speed for safely negotiating a turn of radius r is:

  1. (a) √(rg sin θ)
  2. (b) √(rg cos θ)
  3. (c) √(rg tan θ)
  4. (d) √rg
Answer and solution

Answer (c) √(rg tan θ)

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