6. You land on a new planet and would like to figure out its freefall acceler- ation, gp. You make a pendulum out of a solid disk as seen below: Joo R/2 Suppose the disk has total mass m = 2 kg and radius R = 0.25 m. Its COM is indicated by the blue "x" on the diagram, a distance of R/2 from the circumference. Ensuring that is very small, you let the pendulum oscillate and measure that its total period is T = 1.5 s. What is gp?

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### Determining Free-Fall Acceleration on a New Planet Using a Pendulum

**Problem Statement:**

You land on a new planet and would like to figure out its freefall acceleration, \( g_p \). You make a pendulum out of a solid disk as shown below:

![Diagram of solid disk pendulum](cosmetic-description)

In the diagram:
- The solid disk is colored yellow.
- The pendulum is pivoted at a point just outside its circumference.
- The disk is depicted with its radius \( R \) extending from the center to the edge.
- The center of mass (COM) of the disk is indicated by a blue "x," located a distance of \( R/2 \) from the circumference.
- A dotted line represents the path the COM will follow as the disk oscillates.
- \( \theta_0 \) is the small initial angle of displacement from the vertical.

**Given Data:**
- Total mass of disk, \( m = 2 \) kg
- Radius of disk, \( R = 0.25 \) m
- Period of oscillation, \( T = 1.5 \) s

**Objective:**
To determine the acceleration due to gravity, \( g_p \), on the new planet.

**Explanation of the Diagram:**

The diagram is a side view of a pendulum made from a solid disk. The pendulum is fixed at a point on the edge of the disk and allowed to oscillate. The initial displacement angle \( \theta_0 \) is very small. 

The center of mass (COM) of the disk is marked with a blue "x," which is at a distance \( R/2 \) from the pivot point. This distance forms the effective length of the pendulum.

**Steps to Determine \( g_p \):**
1. **Identify the effective length of the pendulum, \( L \)**: This is the distance from the pivot point to the center of mass of the disk. For a solid disk, this distance is \( R/2 \).

2. **Use the formula for the period of a physical pendulum**:
   \[
   T = 2\pi \sqrt{\frac{I}{mgL}}
   \]
   Where:
   - \( I \) is the moment of inertia of the disk about the pivot.
   - \( m \) is the mass of the disk.
   - \( g
Transcribed Image Text:### Determining Free-Fall Acceleration on a New Planet Using a Pendulum **Problem Statement:** You land on a new planet and would like to figure out its freefall acceleration, \( g_p \). You make a pendulum out of a solid disk as shown below: ![Diagram of solid disk pendulum](cosmetic-description) In the diagram: - The solid disk is colored yellow. - The pendulum is pivoted at a point just outside its circumference. - The disk is depicted with its radius \( R \) extending from the center to the edge. - The center of mass (COM) of the disk is indicated by a blue "x," located a distance of \( R/2 \) from the circumference. - A dotted line represents the path the COM will follow as the disk oscillates. - \( \theta_0 \) is the small initial angle of displacement from the vertical. **Given Data:** - Total mass of disk, \( m = 2 \) kg - Radius of disk, \( R = 0.25 \) m - Period of oscillation, \( T = 1.5 \) s **Objective:** To determine the acceleration due to gravity, \( g_p \), on the new planet. **Explanation of the Diagram:** The diagram is a side view of a pendulum made from a solid disk. The pendulum is fixed at a point on the edge of the disk and allowed to oscillate. The initial displacement angle \( \theta_0 \) is very small. The center of mass (COM) of the disk is marked with a blue "x," which is at a distance \( R/2 \) from the pivot point. This distance forms the effective length of the pendulum. **Steps to Determine \( g_p \):** 1. **Identify the effective length of the pendulum, \( L \)**: This is the distance from the pivot point to the center of mass of the disk. For a solid disk, this distance is \( R/2 \). 2. **Use the formula for the period of a physical pendulum**: \[ T = 2\pi \sqrt{\frac{I}{mgL}} \] Where: - \( I \) is the moment of inertia of the disk about the pivot. - \( m \) is the mass of the disk. - \( g
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