Aspherical balloon with a radius of 10.0 m is filled with helium. the weight of the balloon and the gondola is 1100 n. (the volume of a sphere is given by v = (4/3)(pi a.) draw a free body diagram for the balloon clearly labeling all forces. write down the equation which is obtained from newton’s second law. b.) what is the buoyant force on the balloon? c.) what is the acceleration of the balloon? d.) what is the maximum additional payload that could be carried by the balloon?