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A bob is pulled sideway so that string b...

A bob is pulled sideway so that string becomes parallel to horizontal and released. Length of the pendulum is 2 m. If due to air resistance loss of cergy is 10%, what is the speed with which the bob arrived at the lowest point

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The correct Answer is:
`1/2mv^(2)=90%"of mgh"`
`therefore v=6m/s`
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FULL MARKS-WORK, ENERGY AND POWER-Additional Question Solved (II. Short Answer Questions)
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