College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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A modified Atwood machine to observe the motion of a system of objects as those objects undergo constant acceleration. The modification is shown in the image below. There are still two masses attached by a string that runs over a pulley, but only one of the masses (m2) is able to move in the vertical direction. The other mass (m1) is instead only able to move horizontally. As in the original Atwood machine, these masses will have different directions of motion, but due to their arrangement, they will still have equal magnitudes of acceleration. the total mass of the system, m1+m2, stays constant.
To predict the acceleration of the two masses one might want to recall Newton's second law valid for each object:
F→net=ma→
Question:
draw free body diagrams for both masses, write down equation(s) for both masses, and solve for the acceleration.
Transcribed Image Text:The image depicts a classic physics problem involving a pulley system. Here's a detailed explanation:
**Diagram Description:**
- **Blocks:** There are two blocks in the system, labeled \( m_1 \) and \( m_2 \).
- \( m_1 \) is positioned on a horizontal surface at the left, resting on a platform.
- \( m_2 \) is hanging freely.
- **Pulley System:**
- A rope connects the two blocks and runs over a pulley.
- The pulley is fixed at the edge of the platform where \( m_1 \) is located.
- The rope is assumed to be inextensible and massless for simplicity in solving physics problems.
- **Surfaces:**
- The platform supporting \( m_1 \) is represented as a horizontal surface.
- The vertical drop where \( m_2 \) hangs is indicated with diagonal lines, signifying the absence of a supporting surface.
**Physics Context:**
This system is typically used to study mechanics, specifically Newton's laws of motion, tension in the rope, gravitational force acting on the masses, and how these components interact within a pulley system. Students might calculate the acceleration of the blocks and the tension in the rope, assuming negligible friction and massless pulley and rope.
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