Question
Mon October 03, 2011 By: Rahul
 

Two balls have the same size but one denser than other. Assume that the air resistance is same in each case. Show that when they are released simultaneously from the same height, the heavier ball will reach the ground first.

Expert Reply
Tue October 04, 2011

The retarding force F and g will be same for the two balls.

Net downward acceleration =g-(force/mass)

 In case of denser ball, retarding acceleration would be less as mass is more.

Therefore , the net downward acceleration will be greater and it will reach the ground first.

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