Answer:
a. 6N
Step-by-step explanation:
Taking 9.81 as the acceleration due to gravity and the formula for calculation of a force, mass times acceleration:
![f = ma \\ 3 = 9.81m \\ 6 = 9.81(m)/(2)](https://img.qammunity.org/2021/formulas/physics/high-school/hud8o0ffdftl61jrfebi1xd498h0j29bw3.png)
To be clear, I'm using 9.81 for the sake of reducing variables and ease understanding of the formula. In a real life scenario, the acceleration could be any value, but in this specific scenario it can be disregarded.