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  • A stone falling from the top of a vertical tower has descended x metres when another is let fall from a point? y metres below

IMG_20190120_100813.jpg A stone falling from the top of a vertical tower has descended x metres when another is let fall from a point? y metres below the top. if they fall from rest and reach the ground together, show that the height of the tower is

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best_answer

Let A and B two stone as shown in figure

and B just fell when A has descended at a distance x from the top of tower

t_A_{total}=\sqrt{\frac{2h}{g}}-\sqrt{\frac{2x}{g}}

 

similarlyt_B_{total}=\sqrt{\frac{2(h-y)}{g}}

 t_A_{total}=t_B_{total}

 

 

Posted by

avinash.dongre

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