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You are helping your friend unload their moving truck. You are starting to get lazy, so you just set the boxes on the ramp down to the ground to let them slide down. You try to do the same with a small chair, but notice that it slides down the ramp much more slowly. Being a budding physicist, you reason that this is because the chair/ramp combination has a larger coefficient of kinetic friction than the boxes/ramp combination. The chair accelerates down the ramp at 0.72 The ramp is at an angle of 31° below the horizontal and the chair has a mass of 13 kg. Find the coefficient of friction between the chair and the ramp.

You are helping your friend unload their moving truck. You are starting to get lazy, so you just set the boxes on the ramp down to the ground to let them slide down. You try to do the same with a small chair, but notice that it slides down the ramp much more slowly. Being a budding physicist, you reason that this is because the chair/ramp combination has a larger coefficient of kinetic friction than the boxes/ramp combination. The chair accelerates down the ramp at 0.72 The ramp is at an angle of 31° below the horizontal and the chair has a mass of 13 kg. Find the coefficient of friction between the chair and the ramp.

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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**Physics Problem Set** 1. **Ramp and Friction:** You are helping your friend unload their moving truck. Feeling a bit lazy, you set the boxes on a ramp to slide them down. Attempting the same with a small chair results in slower movement. As a budding physicist, you deduce this is because the chair/ramp combination has a higher coefficient of kinetic friction compared to the boxes/ramp combination. The chair accelerates down the ramp at \(0.72 \, \text{m/s}^2\). The ramp is inclined at \(31^\circ\) below the horizontal, and the chair has a mass of \(13 \, \text{kg}\). Calculate the coefficient of friction between the chair and the ramp. 2. **Elevator and Weight Variation:** Your physics professor mentioned that weight perception changes at the start and end of an elevator's movement. To test if your weight actually changes, you take a bathroom scale to a shaky elevator in Elings Hall. You step onto the scale at the second floor and press the button to descend to the first floor. Before the elevator moves, your weight is \(934 \, \text{N}\). Once the elevator starts descending, the scale reads \(813 \, \text{N}\). Calculate the magnitude of the elevator's acceleration. 3. **Car Racing Dynamics:** Ricky Bobby was once the best in car racing but has since become cautious after an accident. He now navigates a banked curve on a racetrack at suboptimal speed. Analyze the physics affecting Ricky Bobby's performance and safety as he manages the curve.
Transcribed Image Text:**Physics Problem Set** 1. **Ramp and Friction:** You are helping your friend unload their moving truck. Feeling a bit lazy, you set the boxes on a ramp to slide them down. Attempting the same with a small chair results in slower movement. As a budding physicist, you deduce this is because the chair/ramp combination has a higher coefficient of kinetic friction compared to the boxes/ramp combination. The chair accelerates down the ramp at \(0.72 \, \text{m/s}^2\). The ramp is inclined at \(31^\circ\) below the horizontal, and the chair has a mass of \(13 \, \text{kg}\). Calculate the coefficient of friction between the chair and the ramp. 2. **Elevator and Weight Variation:** Your physics professor mentioned that weight perception changes at the start and end of an elevator's movement. To test if your weight actually changes, you take a bathroom scale to a shaky elevator in Elings Hall. You step onto the scale at the second floor and press the button to descend to the first floor. Before the elevator moves, your weight is \(934 \, \text{N}\). Once the elevator starts descending, the scale reads \(813 \, \text{N}\). Calculate the magnitude of the elevator's acceleration. 3. **Car Racing Dynamics:** Ricky Bobby was once the best in car racing but has since become cautious after an accident. He now navigates a banked curve on a racetrack at suboptimal speed. Analyze the physics affecting Ricky Bobby's performance and safety as he manages the curve.
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