Chemistry-
General
Easy

Question

If the over bridge is concave instead of being convex, the thrust on the road at the lowest position will be :

  1. m g plus fraction numerator m u to the power of 2 end exponent over denominator r end fraction    
  2. m g minus fraction numerator m v to the power of 2 end exponent over denominator r end fraction    
  3. fraction numerator m to the power of 2 end exponent v to the power of 2 end exponent g over denominator r end fraction    
  4. fraction numerator v to the power of 2 end exponent g over denominator r end fraction    

The correct answer is: m g plus fraction numerator m u to the power of 2 end exponent over denominator r end fraction

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