A person uses their hand to lift a 0.05-kg guniea pig from the ground at a constand speed.What is the force applied by the person on the guinea pig? What is the net force on the guinea pig?
That's the minimum force you can use to pick it up.
That's the force applied by the person to pick up the pig at a nice gentle constant speed.
Then the net force on the pig is zero. The upward and downward forces add up to zero, and that's why the animal is moving at a constant speed, and not accelerating up or down.
