A child is sitting on a swing. Its minimum and maximum heightsfrom the groundare 0.75 m and 2m respectively. Its maximum speed willbe :

A child is sitting on a swing. Its minimum and maximum heightsfrom the

1.	A child is sitting on a swing. Its minimum and maximum heightsfrom the groundare 0.75 m and 2m respectively. Its maximum speed willbe :
Answer» 10 m/s 8 m/s 5 m/s 15 m/s Solution :`(1)/(2)m V^(2)=mg(h_(2)-h_(1))` `v=sqrt(2g(2-0.75))=sqrt(2xx10xx1.25)=5" ms"^(-1)` CORRECT CHOICE is ( c ).

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A child is sitting on a swing. Its minimum and maximum heightsfrom the groundare 0.75 m and 2m respectively. Its maximum speed willbe :

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