An athlete making a high jump to clear the bar at a certain height.

Explanation

**Step-by-Step Solution:**

1. **Identify the Agent Applying Force:**
- In this scenario, the agent applying the force is the athlete. The athlete exerts force through their legs to propel themselves upward.

2. **Identify the Object on Which Force is Applied:**
- The object on which the force is applied is the bar. The athlete jumps to clear this bar, which is positioned at a certain height.

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