EXPERIMENT 9 Projectile Motion: The Ballistic Pendulum Laboratory Report B. Determination of the Initial Velocity of a Projectile from Range-Fall Measurements DATA TABLE 2 Purpose: To determine the magnitude of initial projectile velocity. Range (cm) Vertical distance of fall, y __105 cm_ Trial 226 Computed v, . (units) 230 3 228 Percent difference between results of Parts A and B_ 225 222 Average

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Do Table 2
---

**Ballistic Pendulum**

### A. Ballistic Pendulum

#### DATA TABLE 1

| Trials | Notch number of pendulum catch | Height \( h_2 \) of pointer with Pendulum catch in closest-to-average notch number |
|--------|-------------------------------|--------------------------------------------------------------------------------|
| 1      | 9                             |                                                                                |
| 2      | 5                             | Height \( h_2 \): 12.60 cm                                                       |
| 3      | 5                             |                                                                                |
| 4      | 7                             |                                                                                |
| 5      | 8                             |                                                                                |

**Average: 7**

Height \( h_1 \) of pointer with pendulum freely suspended: **5.10 cm**

Height \( h = h_2 - h_1 \): **7.50 cm**

Mass of ball \( m \): **69.6 g**

Mass of pendulum \( M \) (bob and support): **275.6 g**

Computed \( v_{x0} \): ________ units


---

**EXPERIMENT 9**: Projectile Motion: The Ballistic Pendulum

### B. Determination of the Initial Velocity of a Projectile from Range-Fall Measurements

#### DATA TABLE 2

**Purpose**: To determine the magnitude of initial projectile velocity.

| Trial | Range (cm) |
|-------|------------|
| 1     | 226        |
| 2     | 230        |
| 3     | 228        |
| 4     | 225        |
| 5     | 222        |

**Average:**

Vertical distance of fall, \( y \): **105 cm**

Computed \( v_{x0} \): ________ (units)

Percent difference between results of Parts A and B: _______________

---

Calculations  
(show work)

---
Transcribed Image Text:--- **Ballistic Pendulum** ### A. Ballistic Pendulum #### DATA TABLE 1 | Trials | Notch number of pendulum catch | Height \( h_2 \) of pointer with Pendulum catch in closest-to-average notch number | |--------|-------------------------------|--------------------------------------------------------------------------------| | 1 | 9 | | | 2 | 5 | Height \( h_2 \): 12.60 cm | | 3 | 5 | | | 4 | 7 | | | 5 | 8 | | **Average: 7** Height \( h_1 \) of pointer with pendulum freely suspended: **5.10 cm** Height \( h = h_2 - h_1 \): **7.50 cm** Mass of ball \( m \): **69.6 g** Mass of pendulum \( M \) (bob and support): **275.6 g** Computed \( v_{x0} \): ________ units --- **EXPERIMENT 9**: Projectile Motion: The Ballistic Pendulum ### B. Determination of the Initial Velocity of a Projectile from Range-Fall Measurements #### DATA TABLE 2 **Purpose**: To determine the magnitude of initial projectile velocity. | Trial | Range (cm) | |-------|------------| | 1 | 226 | | 2 | 230 | | 3 | 228 | | 4 | 225 | | 5 | 222 | **Average:** Vertical distance of fall, \( y \): **105 cm** Computed \( v_{x0} \): ________ (units) Percent difference between results of Parts A and B: _______________ --- Calculations (show work) ---
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