The Resistance force is the nail that is being pulled up My silly dear child, you.
The effort force is where you are holding the hammer to pull the nail.
1. when you drop a feather and a hammer the feather falls slower than the hammer
resistance force.
It is the pulling force applied multiplied by the displacement of the object being pulled in the direction of the pulling force.
Stretching force
The effort force is where you are holding the hammer to pull the nail.
Air resistance.
1. when you drop a feather and a hammer the feather falls slower than the hammer
centripetal is the force pulling towards the center of a circle. And centrifiugal is artificial gravity. It makes you "feel" like you are being pulled into one direction when you are being pulled to the other.
In this case you can simply subtract the two forces.
Nothing keeps them from being pulled. Earth's gravity certainly pulls on them.
It is the pulling force applied multiplied by the displacement of the object being pulled in the direction of the pulling force.
resistance force.
Stretching force
They are being pulled by the force of gravity
Tension
Force = mass * acceleration you do the math