Question

the refrigerator exerts an attractive magnetic force $f_m$ on the magnet. which free - body diagram correctly models the forces acting on the magnet? force symbols choose 1 answer: a $f_f$ upward, $f_g$ downward, $f_m$ to the right (diagram description)

Explanation:

Step1: Identify Forces on Magnet

A magnet on a refrigerator has three main forces: gravitational force ($F_g$) downward, frictional force ($F_f$) upward (to balance gravity, since it's stationary vertically), and magnetic attractive force ($F_m$) from the refrigerator (horizontal, towards the fridge).

Step2: Analyze Diagram A

Diagram A shows $F_g$ downward, $F_f$ upward (vertical equilibrium), and $F_m$ horizontal (attractive force from fridge). This matches the force balance: vertical forces ($F_f = F_g$) and horizontal magnetic force $F_m$. Other diagrams (not fully shown, but A's structure is correct) would lack one of these forces or have incorrect directions. So A correctly models the forces.

Answer:

A. The diagram with \( F_f \) upward, \( F_g \) downward, and \( F_m \) horizontal (towards the right, representing the refrigerator's attractive force).