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Two stones of different masses are dropped simultaneously from the top of a building

Answer» <html><body><p> Both the stones reach the ground at the same time</p><br/><br/><p>Both stones reach the ground at the same time. The initial <a href="https://interviewquestions.tuteehub.com/tag/speed-1221896" style="font-weight:bold;" target="_blank" title="Click to know more about SPEED">SPEED</a> is 0 for both stones, and the only acceleration working in that <a href="https://interviewquestions.tuteehub.com/tag/system-1237255" style="font-weight:bold;" target="_blank" title="Click to know more about SYSTEM">SYSTEM</a> would be g (Gravity acceleration). So, as the distance is the same, the final speed will be the same time. The only reason which could change this result is a difference in the shape of the stones. While they fall to the ground, they must “open” a way across the air. The shape of the falling object will decide the force needed to open that way. This is <a href="https://interviewquestions.tuteehub.com/tag/called-907796" style="font-weight:bold;" target="_blank" title="Click to know more about CALLED">CALLED</a> the “Air resistance”. Depending on the shape of the object, the resistance force will be <a href="https://interviewquestions.tuteehub.com/tag/bigger-896965" style="font-weight:bold;" target="_blank" title="Click to know more about BIGGER">BIGGER</a> or smaller. As this force works counter to g, the falling time will decrease. Between a feather and a <a href="https://interviewquestions.tuteehub.com/tag/plumb-2223837" style="font-weight:bold;" target="_blank" title="Click to know more about PLUMB">PLUMB</a> ball, the falling time will be the same in vacuum, but inside air, the resistance force for the feather has almost the same value than gravity, while for the ball, the resistance is very much weaker than gravity.</p></body></html>


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