Answer / prakash

spherical baloon

Answer / jitendra

Spherical ballon
Since sphere has a smallest surface area the friction
exerted on the ballon by the air will be less than that of
a cylindrical ballon which has greater surface area than
spherical ballon. Hence spherical ballon will rises faster.

Answer / arshad

spherical

Answer / narendra

spherical baloon because spherical shape gets less pressure
of atm. gaseous.

Answer / bejoy

assuming both baloons to be having same volume..then both
will have same bouyantic force acting on them..now again as
u know a cylnder of same volume has more surfce area, the
weight of rubber used for a cylinderical baloon would b
higher(assuming same thicknes for both baloons), so
spherical will weigh lesser..now assuming again that the
same amount of rubber is used for both,then just drag
decides..and drag is decided by the configuration in which
the balon is rising..even a cylindircal baloon can rise
faster(assuming it to be going up length wise) if its
properly configured and left..assuming again no disturbing
forces in air..

Answer / janardhan

cylindrical ballon

Answer / karthick

in general anything in the form of spherical attains
equilibrium position faster than other form.so i guess
spherical rises faster than cylindrical

Answer / sharath

spherical

because of the curvy surface of spherical balloon it is easy to cut the air stream. but in the case of cylindrical balloon resistance is more due to flat face

Answer / san

spherical will rise fast..

Answer / dilip mishra

As we know the Pressure is inversely proportional to area ( P= F/ A) , hence spehre is less surface area which in-turn reduces the value of denominator and increase force on unit surface area then cylindrical balloon.

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