Question

1. name the missing force... a) buoyant force b) weight force c) normal force d) spring force

Explanation:

Step1: Analyze the situation

The object is hanging from a spring. The gravitational force $F_g$ acts down - ward. According to Newton's third - law, for the object to be in equilibrium (assuming it is at rest or moving with constant velocity), there must be an upward force exerted by the spring on the object.

Step2: Recall force types

A buoyant force acts when an object is submerged in a fluid. A weight force is already given as $F_g$. A normal force acts when an object is in contact with a surface. Here, the upward force is exerted by the spring on the object, which is a spring force.

Answer:

d) spring force