Air being a fluid produces a small buoyant force on the skydiver. How does the buoyant force change after he opens his parachute? Why?

Explanation

To understand how the buoyant force on a skydiver changes after he opens his parachute, we can break down the problem into a few key steps:

### Step-by-Step Solution:

1. **Understanding Buoyant Force**:
The buoyant force acting on an object submerged in a fluid (in this case, air) is given by Archimedes' principle. It states that the buoyant force is equal to the weight of the fluid displaced by the object.

2. **Initial Condition (Before Opening the Parachute)**:
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