posted by pramod .
a rain drop falls from rest in an atmosphere saturated with water vapour. As it falls, water vapour condenses on drop at rate of mass µ per second. If initial mass of drop is M0, how much distance the drop falls in time t?
Why would adding mass increase the drop speed (ignoring air friction)? Didn't Galileo demonstrate falling objects of different mass fall at the same rate?
d= 1/2 g t^2, it is mass independent (ignoring air friction).