1. Friction Dynamics Physics

2. #1) Friction of a car A car has a mass of 1700 kg and is located on a level road. Some friction exists in the wheel bearings and engine that resist motion. The coefficient of static friction (µ s ) is 0.25, and the coefficient of kinetic friction (µ k ) is 0.15 A. Draw the FBD for a car being pulled horizontally. B. How much force is required to get the car to begin rolling forward? C. How much force is required to keep the car moving at a constant velocity? D. If the car is pulled with a force of 4200N, what is its acceleration? E. Considering that the car begins rolling from rest, what will its velocity be after 20 seconds?

3. #1) Friction of a car A car has a mass of 1700 kg and is located on a level road. Some friction exists in the wheel bearings and engine that resist motion. The coefficient of static friction (µ s ) is 0.25, and the coefficient of kinetic friction (µ k ) is 0.15 A. Draw the FBD for a car being pulled horizontally. B. How much force is required to get the car to begin rolling forward? C. How much force is required to keep the car moving at a constant velocity? D. If the car is pulled with a force of 4200N, what is its acceleration? E. Considering that the car begins rolling from rest, what will its velocity be after 20 seconds?

4. #1) Friction of a car A car has a mass of 1700 kg and is located on a level road. Some friction exists in the wheel bearings and engine that resist motion. The coefficient of static friction (µ s ) is 0.25, and the coefficient of kinetic friction (µ k ) is 0.15 A. Draw the FBD for a car being pulled horizontally. B. How much force is required to get the car to begin rolling forward? C. How much force is required to keep the car moving at a constant velocity? D. If the car is pulled with a force of 4200N, what is its acceleration? E. Considering that the car begins rolling from rest, what will its velocity be after 20 seconds?

5. #1) Friction of a car A car has a mass of 1700 kg and is located on a level road. Some friction exists in the wheel bearings and engine that resist motion. The coefficient of static friction (µ s ) is 0.25, and the coefficient of kinetic friction (µ k ) is 0.15 A. Draw the FBD for a car being pulled horizontally. B. How much force is required to get the car to begin rolling forward? C. How much force is required to keep the car moving at a constant velocity? D. If the car is pulled with a force of 4200N, what is its acceleration? E. Considering that the car begins rolling from rest, what will its velocity be after 20 seconds?

6. #1) Internal Friction of a Car A car has a mass of 1700 kg and is located on a level road. Some friction exists in the wheel bearings and engine that resist motion. The coefficient of static friction (µ s ) is 0.25, and the coefficient of kinetic friction (µ k ) is 0.15 A. Draw the FBD for a car being pulled horizontally. B. How much force is required to get the car to begin rolling forward? C. How much force is required to keep the car moving at a constant velocity? D. If the car is pulled with a force of 4200N, what is its acceleration? E. Considering that the car begins rolling from rest, what will its velocity be after 20 seconds?

7. #2) Sleigh A horse pulls a sleigh with a force of 230N. The total mass of the sleigh, cargo, and passenger is 130kg. A. Draw the FBD for a sleigh being pulled horizontally. B. The coefficient of kinetic friction (µ k ) is 0.1 on snow. What is the acceleration of the sleigh? C. On a different surface, the acceleration is measured to be 0.20 m/s 2. What is the coefficient of kinetic friction? cgg

8. #2) Sleigh A horse pulls a sleigh with a force of 230N. The total mass of the sleigh, cargo, and passenger is 130kg. A. Draw the FBD for a sleigh being pulled horizontally. B. The coefficient of kinetic friction (µ k ) is 0.1 on snow. What is the acceleration of the sleigh? C. On a different surface, the acceleration is measured to be 0.20 m/s 2. What is the coefficient of kinetic friction? cgg

9. #2) Sleigh A horse pulls a sleigh with a force of 230N. The total mass of the sleigh, cargo, and passenger is 130kg. A. Draw the FBD for a sleigh being pulled horizontally. B. The coefficient of kinetic friction (µ k ) is 0.1 on snow. What is the acceleration of the sleigh? C. On a different surface, the acceleration is measured to be 0.20 m/s 2. What is the coefficient of kinetic friction? cgg

10. #3) Moving Furniture A man accelerates a 160 kg couch horizontally at 1 m/s 2 by applying a 200N force. A. Draw the FBD for a couch being pushed horizontally. B. What is the magnitude of the friction force? C. What is the coefficient of kinetic friction? D. What is the magnitude of the pushing force? cgg

11. #3) Moving Furniture A man accelerates a 160 kg couch horizontally at 1 m/s 2 by applying a 200N force. A. Draw the FBD for a couch being pushed horizontally. B. What is the magnitude of the friction force? C. What is the coefficient of kinetic friction? D. What is the magnitude of the pushing force? cgg

12. #3) Moving Furniture A man accelerates a 160 kg couch horizontally at 1 m/s 2 by applying a 200N force. A. Draw the FBD for a couch being pushed horizontally. B. What is the magnitude of the friction force? C. What is the coefficient of kinetic friction? D. What is the magnitude of the pushing force? cgg