Yes, there should be some friction. However, the main reason it costs you some effort is because the pressure inside the balloon is greater than the pressure outside.
the forces are gravitational force and frictional force.
force
Yes in physic, such as the frictional force and the horizontal force of the normal force as the centripetal force while turning at a cornering
static frictional force
i am sure that it is not frictional force.....
Frictional force is the force that opposes motion between two surfaces.
Because space is a vacuum, the planets have no frictional force to slow them down, unless they collide with another planet. This is why earth does not stop and plunge into the sun. The forces involved in the orbit of a planet are gravity and centrifugal force, but not friction
Air fill the balloon and force it to expand but being a rubber base substance the balloon always in the state of pushing the air (that's why if you put a hole on a balloon it will "fly"). Air pushing is an action. Balloon pushing back is a reaction.
if the frictional resistance is high, the force will be greater, and if the frictional resistance is low, the force will be smaller.
The size of the normal force and coefficient of friction determines the size of frictional force.
The size of the normal force and coefficient of friction determines the size of frictional force.
No. Frictional force is independant of surface area.