The dresser has a weight of 60 lb and is pushed along the floor as shown in (Figure 1). Assume h = 3.5 ft. The coefficient of static friction at A and B is μ, = 0.34 and the coefficient of kinetic friction is = 0.2. μ Figure 2.5 ft 15--15-- B < 1 of 1 > Part A Determine the smallest horizontal force P needed to cause motion. Express your answer in pounds to three significant figures. [ϋΠ ΑΣΦU Vec Ⓒ13 ? P. Submit Part B a = Submit If force P is increased slightly, determine the acceleration of the dresser. Express your answer in feet per squared second to three significant figures. Enter positive value if the acceleration is to the right and negative value if the acceleration is to the left. VAΣ vec + → Ⓒ13 ? Part C NA. NB Request Answer Submit Provide Feedback Request Answer → Also, what are the normal reaction at A and B when it begins to move? Express your answers in pounds using three significant figures separated by a comma. ΠΕ ΑΣΦ Request Answer lb vec ← → ft/s² ? lb
The dresser has a weight of 60 lb and is pushed along the floor as shown in (Figure 1). Assume h = 3.5 ft. The coefficient of static friction at A and B is μ, = 0.34 and the coefficient of kinetic friction is = 0.2. μ Figure 2.5 ft 15--15-- B < 1 of 1 > Part A Determine the smallest horizontal force P needed to cause motion. Express your answer in pounds to three significant figures. [ϋΠ ΑΣΦU Vec Ⓒ13 ? P. Submit Part B a = Submit If force P is increased slightly, determine the acceleration of the dresser. Express your answer in feet per squared second to three significant figures. Enter positive value if the acceleration is to the right and negative value if the acceleration is to the left. VAΣ vec + → Ⓒ13 ? Part C NA. NB Request Answer Submit Provide Feedback Request Answer → Also, what are the normal reaction at A and B when it begins to move? Express your answers in pounds using three significant figures separated by a comma. ΠΕ ΑΣΦ Request Answer lb vec ← → ft/s² ? lb
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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![**Problem Description:**
The dresser has a weight of 60 lb and is pushed along the floor as shown in Figure 1. Assume \( h = 3.5 \) ft. The coefficient of static friction at A and B is \( \mu_s = 0.34 \) and the coefficient of kinetic friction is \( \mu_k = 0.2 \).
**Figure Explanation:**
The figure depicts a vertical dresser being pushed by a horizontal force \( P \). The dresser's height is given as 3.5 ft with a base width of 3 ft (1.5 ft on each side of the center of gravity, G). Points A and B are the contact points with the ground.
---
**Questions:**
**Part A:**
Determine the smallest horizontal force \( P \) needed to cause motion.
- Express your answer in pounds to three significant figures.
\[ P = \_\_\_ \text{ lb} \]
**Part B:**
If force \( P \) is increased slightly, determine the acceleration of the dresser.
- Express your answer in feet per squared second to three significant figures. Enter positive value if the acceleration is to the right and negative value if the acceleration is to the left.
\[ a = \_\_\_ \text{ ft/s}^2 \]
**Part C:**
Also, what are the normal reactions at A and B when it begins to move?
- Express your answers in pounds using three significant figures separated by a comma.
\[ N_A, N_B = \_\_\_ \text{ lb} \]
---](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F2b659566-a2ad-4ea7-b4ee-c67667eae8be%2F0e82ea63-6b53-429a-8f3d-212d725d18ae%2Fq7vsqtb_processed.png&w=3840&q=75)
Transcribed Image Text:**Problem Description:**
The dresser has a weight of 60 lb and is pushed along the floor as shown in Figure 1. Assume \( h = 3.5 \) ft. The coefficient of static friction at A and B is \( \mu_s = 0.34 \) and the coefficient of kinetic friction is \( \mu_k = 0.2 \).
**Figure Explanation:**
The figure depicts a vertical dresser being pushed by a horizontal force \( P \). The dresser's height is given as 3.5 ft with a base width of 3 ft (1.5 ft on each side of the center of gravity, G). Points A and B are the contact points with the ground.
---
**Questions:**
**Part A:**
Determine the smallest horizontal force \( P \) needed to cause motion.
- Express your answer in pounds to three significant figures.
\[ P = \_\_\_ \text{ lb} \]
**Part B:**
If force \( P \) is increased slightly, determine the acceleration of the dresser.
- Express your answer in feet per squared second to three significant figures. Enter positive value if the acceleration is to the right and negative value if the acceleration is to the left.
\[ a = \_\_\_ \text{ ft/s}^2 \]
**Part C:**
Also, what are the normal reactions at A and B when it begins to move?
- Express your answers in pounds using three significant figures separated by a comma.
\[ N_A, N_B = \_\_\_ \text{ lb} \]
---
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