The force that changes when the parachute opens is air resistance, also known as drag force. As the parachute opens, it increases the surface area exposed to the air, which increases the drag force acting on the parachute and slows down the descent of the object attached to the parachute.
When a parachute is deployed, the action force is the air resistance pushing against the parachute fabric. This air resistance is created by the change in the air's velocity as it passes through the canopy of the open parachute. The reaction force to this action force is the drag force created by the parachute pulling against the jumper. This drag force is created by the increase in the parachute's surface area, which slows the jumper down as they fall. The drag force is also responsible for the parachute's ability to slow the jumper's descent enough to safely reach the ground.
The force of gravity and the force of the friction of the parachute moving through the air. I can not draw a diagram on this forum.
air resistance
Friction between the parachute and the air helps slow down the descent of the parachute by creating drag. This drag force counteracts the force of gravity, allowing the parachute to descend at a safe and controlled speed. Adjusting the size and shape of the parachute can also affect the amount of friction and thus the descent rate.
As long as it is not accelerating (going faster and faster, or slower and slower), the forces on the parachute are balanced. Initially, the parachute will accelerate - in this case the forces are unbalanced. It will continue accelerating, until the force of gravitation is balanced by the force of resistance.
The force that changes is air resistance and the force that stay the same is gravity.
Up thrust because the air pushes up and fills up the parachute.
"Gravity" is.
It is air resistance.
drag
force