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A simple pendulum with length  $L$ and mass $m$ of the bob is vibrating with an amplitude $A$. The maximum tension in the string is
  • A$mg$
  • B$mg\left[ {1 + {{\left( {\frac{A}{L}} \right)}^2}} \right]$
  • C$mg\left[ {1 + {{\left( {\frac{A}{2L}} \right)}^2}} \right]$
  • D$mg\left[ {1 - {{\left( {\frac{3A}{L}} \right)}^2}} \right]$
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