Physics-
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Question

An unbanked curve has a radius of 60 m. The maximum speed at which car can make a turn if the coefficient of static friction is 0.75, is

  1. 2.1 blank m divided by s    
  2. 14 blank m divided by s    
  3. 21 blank m divided by s    
  4. 7 blank m divided by s    

The correct answer is: 21 blank m divided by s


    V subscript m a x end subscript equals square root of mu r g end root equals square root of 0.75 cross times 60 cross times 9.8 end root equals 21 m divided by s

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