Point of Application of Air Resistance and Gravity

[Tyleralp1]

Hey guys,

We have a SAC coming up in regards to forces during parachutes and free fall. I need some clarification when it comes to drawing the forces acting on the diver.

Basically, my questions are, with correct points of application:
1. How would you draw drag + gravity during free fall?
2. How would you draw drag + gravity just as the parachute opens
3. How would you draw drag + gravity after the parachute has been opened.

Thank you

[Tyleralp1]

Could a mod please edit the title by replacing "Drag" with "Gravity".

Thanks

Moderator Edit: Done!

[AirLandBus]

Hey guys,

We have a SAC coming up in regards to forces during parachutes and free fall. I need some clarification when it comes to drawing the forces acting on the diver.

Basically, my questions are, with correct points of application:
1. How would you draw drag + gravity during free fall?
2. How would you draw drag + gravity just as the parachute opens
3. How would you draw drag + gravity after the parachute has been opened.

Thank you

Id being doing
1) Arrow acting down (gravity) which is greater (bigger arrow) and then arrow acting up (air resistance/drag) which is smaller (smaller arrow) - However, if it has reached its terminal velocity, then the sum of air resistance/drag would be equal to the magnitude/force of gravity.
2) Arrow acting down (gravity) which is still slightly greater (bigger arrow) and then arrow acting up (air resistance/drag) which is slightly smaller (smaller arrow) as hes still falling at a decent rate.
3) Arrow acting down (gravity) which is slightly greater (bigger arrow) and then arrow acting up (air resistance/drag) which is slightly smaller - as the air resistance is significatly slowing him down to a safe landing speed, thus air resistance force must be close to the value of force exerted by gravity.

This is what id be doing. Whether im right or not is another thing