A car of mass $1000\, kg$ negotiates a banked curve of radius $90\, m$ on a frictionless road. If the banking angle is $45^o $, the speed of the car is ....... $ms^{-1}$
  • A$20$
  • B$10$
  • C$30$
  • D$5$
AIPMT 2012, Medium
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