Question Detail
Question
Calculate the maximum speed attained by a rod of radius 20 m banked at an angle of 48.9°.
Correct Answer
Option A is the correct answer.
Detailed Explanation
For banked curve without friction, v = √(rg tan θ) = √(20 × 9.8 × tan 48.9°) = √(20 × 9.8 × 1.15) = √(20 × 11.27) = √225.4 = 15.0 m/s.
Hint
v = √(rg tan θ) for optimum banking.