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Chilukuri Sai Kartik Grade: 12
        

A stone is dropped from top of a tower. When it crosses a point 5m below the top, another stone is let to fall from a point 25m below the top. Both stones reach the bottom of tower simultaneously.Find the height of the tower.(g=10 m/s2)

7 years ago

Answers : (1)

Badiuddin askIITians.ismu Expert
147 Points
										

Dear Chilukuri


tami taken to fall a distance 5 m by first stone


5=1/2 *g*t2


t=1 sec


let hight of tower is h


so motion of first stone


 h= 1/2 * 10 * t2              .....................1


motion of second stone


h-25 =1/2 * 10 *(t-1)2                   ...............2


put value of h from equation 1


 t=3 sec


and h=45 m





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7 years ago
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