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?

The animal's weight is

(mass) x (gravity)

= (0.05 kg) x (9.8 m/s²) = 0.49 newton.

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.