Aperson 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.

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