Final answer:
The guinea pig will move upward if the force applied is greater than or equal to its weight.
Step-by-step explanation:
In this situation, the guinea pig is moving upward and you are lifting it with a force of 4.9 N. To justify the answer, we need to consider the forces acting on the guinea pig. The two main forces are the gravitational force (weight) pulling the guinea pig downward and the force you are applying to lift it upward. If the force you are applying is greater than or equal to the weight of the guinea pig, it will move upward. If the force you are applying is less than the weight, it will not be able to overcome the gravitational force and will not move upward.