The larger sail area causes a larger foil to pull the boat faster.
it depends on the type of sailboat, the wind strength
yes
I want to look for a certain set of sails to be on sale at the sailboat show. Let's just go to the sailboat show and see what's on sale. The sailboat show's sale prices always make my heart sail.
a bigger sail would mean a bigger pulling force so it would make the buggy go faster
That is not true, they go faster in high winds if the sails are set correctly.
Because there is more surface area for the wind to push against, so therefore increasing the speed of the boat.
More surface area foils more wind. Actually, the wind PULLS a boat after foiling around the curve of the sail. It is the same aerodynamic theory of "lift".
Deep
In my years of Sailboating in the Waters of the Florida Coast I have found that the best sail to use would be a circular sail painted blue with pink polka dots
It's lift. Like an airplane wing, a sail is an airfoil only vertical. As it passes through the air, the curved shape of the sail causes the air on the outside of the sail to go further and therefore, faster, than the air on the inside of the sail. According to Bernoulli's Principle, when the airflow increases, the pressure drops so the pressure on the underside of the airfoil becomes greater and "lifts" or pushes the sailboat along. See the link below for more information on Bernoulli's Principle.
mainly because of the larger surface area. the bigger the sail, the more wind pressure on the sail, giving you more power, more momentum, and thus sailing faster. Hope this helps~