2. Calculate the speed of the car when it reaches the barrier but has not compressed the barrier yet.
3. Determine the energy lost by friction.
4. Calculate the maximum compression of the spring barrier. Explain your reasoning.
5. Assuming that the car bounces off the spring barrier with no loss of energy, how far does the car slide on this road before stopping?
6. Determine the maximum deceleration experienced by the occupants and the corresponding maximum force exerting by the car on the barrier. Explain.
Homework Answers
Add Answer to:
2. Calculate the speed of the car when it reaches the barrier
but has not compressed...
Question 2. The all-wheel drive car shown in Figure 2 is at rest on a level...
Question 2. The all-wheel drive car shown in Figure 2 is at rest on a level road. The car's mass centre is at G. The car starts moving with an initial acceleration. For this car: (a) Draw the free body diagram showing all the forces acting on the car. (b) Assuming the coefficient of static friction between the tyres and the track is uy for front tyres and H2 for rear tyres, obtain an expression for the maximum possible initial...
Question 2. The all-wheel drive car shown in Figure 2 is at rest on a level...
Question 2. The all-wheel drive car shown in Figure 2 is at rest on a level road. The car's mass centre is at G. The car starts moving with an initial acceleration. For this car: (a) Draw the free body diagram showing all the forces acting on the car. (b) Assuming the coefficient of static friction between the tyres and the track is, for front tyres and Hz for rear tyres, obtain an expression for the maximum possible initial acceleration...
3. A car is negotiating a curve of radius 250 m. If the maximum speed the...
3. A car is negotiating a curve of radius 250 m. If the maximum speed the car can go without slipping is 47 m/s. Find coefficient of static friction between car's tires and the road. A) 0.6 B) 0.7 C) 0.8 D) 0.9 4. A car on a roller coaster has a speed of 12 m/s at an elevation of 20 m above the ground. It coasts down a slope, and then comes to rest after climbing a hill. Find...
#1 a) Calculate the difference in kinetic energy when a 1300 kg car changes its speed&n
#1 a) Calculate the difference in kinetic energy when a 1300 kg car changes its speed from 90.0 m/s to 50.0 m/s. b) How much work is done on the car by friction force between the tires and road? Specify the sign of work. please answer both as they go together
DATA The sports car has a weight of 2,300 lbf V The friction of the car's...
DATA The sports car has a weight of 2,300 lbf V The friction of the car's tires with the road is ? The sports car goes through 0.4 1. o o o A rectilinear motion from A to B A curvilinear motion between B and D A rectilinear motion from D to F A sports car starts from rest going up a hill from point A to point C with a constant acceleration and reaches a speed of Vc 40...
he goal of this problem is to engineer a roller-coaster (see Figure 1). Imagine you work,...
he goal of this problem is to engineer a roller-coaster (see Figure 1). Imagine you work, for an amusement park and your boss asks you to buy a spring that could launch a 2,000kg roller-coaster train on the track. In this problem we consider the acceleration of gravity to be g -9.8m/s. art 1: Frictionless track. We first consider a frictionless track. The train is first compressing a spring of constant k and is suddenly released. The compression A. 4m....
Problem A car travels at a constant speed of 29.5 mi/h (13.2 m/s) on a level...
Problem A car travels at a constant speed of 29.5 mi/h (13.2 m/s) on a level circular turn of radius 46.0 m, as shown in the bird's-eye view in Figure 7.13a. What minimum coefficient of static friction, Aus, between the tires and the roadway will allow the car to make the circular turn without sliding? Strategy In the car's free-body diagram (Fig. 7.13b) the normal direction is vertical and the tangential direction is into the page (step 2). Use Newton's...
7. A highway curve with a radius of R metres is banked so that cars moving at v m/s around the curve do not have to rely on friction when taking the turn. IWPS 7. No.4] 7.1 Show (from first principle...
7. A highway curve with a radius of R metres is banked so that cars moving at v m/s around the curve do not have to rely on friction when taking the turn. IWPS 7. No.4] 7.1 Show (from first principles) that the angle, 6, at which, the road should be banked is given by: 0 arctan 7.2 A particular banked highway curve with a radius of 200 m is designed for traffic moving at 60 km/h. On a rainy...
it has a speed When the 7-kg box reaches point VA = 13 m/s. (Figure 1)...
it has a speed When the 7-kg box reaches point VA = 13 m/s. (Figure 1) Part A Determine the normal force the box exerts on the surface when it reaches point B. Neglect friction and the size of the box. Express your answer to three significant figures and include the appropriate units. Figure < 1 of 1 I Å O2 ? N N = = Value N Submit Previous Answers Request Answer x1/2 + yl/2 = 3 X Incorrect;...
2. Suppose a car travels 108 km at a speed of 20.0 m/s, and uses 2.20...
2. Suppose a car travels 108 km at a speed of 20.0 m/s, and uses
2.20 gallons of gasoline. Only 30% of the gasoline goes into useful
work by the force that keeps the car moving at constant speed
despite friction. (The energy content of gasoline is 1.3 ✕
108 J per gallon.)
(a) What is the force exerted to keep the car moving at constant
speed?
N
(b) If the required force is directly proportional to speed, how
many...
Question 2. The all-wheel drive car shown in Figure 2 is at rest on a level road. The car's mass centre is at G. The car starts moving with an initial acceleration. For this car: (a) Draw the free body diagram showing all the forces acting on the car. (b) Assuming the coefficient of static friction between the tyres and the track is uy for front tyres and H2 for rear tyres, obtain an expression for the maximum possible initial...
Question 2. The all-wheel drive car shown in Figure 2 is at rest on a level road. The car's mass centre is at G. The car starts moving with an initial acceleration. For this car: (a) Draw the free body diagram showing all the forces acting on the car. (b) Assuming the coefficient of static friction between the tyres and the track is, for front tyres and Hz for rear tyres, obtain an expression for the maximum possible initial acceleration...
3. A car is negotiating a curve of radius 250 m. If the maximum speed the car can go without slipping is 47 m/s. Find coefficient of static friction between car's tires and the road. A) 0.6 B) 0.7 C) 0.8 D) 0.9 4. A car on a roller coaster has a speed of 12 m/s at an elevation of 20 m above the ground. It coasts down a slope, and then comes to rest after climbing a hill. Find...
DATA The sports car has a weight of 2,300 lbf V The friction of the car's tires with the road is ? The sports car goes through 0.4 1. o o o A rectilinear motion from A to B A curvilinear motion between B and D A rectilinear motion from D to F A sports car starts from rest going up a hill from point A to point C with a constant acceleration and reaches a speed of Vc 40...
he goal of this problem is to engineer a roller-coaster (see Figure 1). Imagine you work, for an amusement park and your boss asks you to buy a spring that could launch a 2,000kg roller-coaster train on the track. In this problem we consider the acceleration of gravity to be g -9.8m/s. art 1: Frictionless track. We first consider a frictionless track. The train is first compressing a spring of constant k and is suddenly released. The compression A. 4m....
Problem A car travels at a constant speed of 29.5 mi/h (13.2 m/s) on a level circular turn of radius 46.0 m, as shown in the bird's-eye view in Figure 7.13a. What minimum coefficient of static friction, Aus, between the tires and the roadway will allow the car to make the circular turn without sliding? Strategy In the car's free-body diagram (Fig. 7.13b) the normal direction is vertical and the tangential direction is into the page (step 2). Use Newton's...
7. A highway curve with a radius of R metres is banked so that cars moving at v m/s around the curve do not have to rely on friction when taking the turn. IWPS 7. No.4] 7.1 Show (from first principles) that the angle, 6, at which, the road should be banked is given by: 0 arctan 7.2 A particular banked highway curve with a radius of 200 m is designed for traffic moving at 60 km/h. On a rainy...
it has a speed When the 7-kg box reaches point VA = 13 m/s. (Figure 1) Part A Determine the normal force the box exerts on the surface when it reaches point B. Neglect friction and the size of the box. Express your answer to three significant figures and include the appropriate units. Figure < 1 of 1 I Å O2 ? N N = = Value N Submit Previous Answers Request Answer x1/2 + yl/2 = 3 X Incorrect;...
2. Suppose a car travels 108 km at a speed of 20.0 m/s, and uses
2.20 gallons of gasoline. Only 30% of the gasoline goes into useful
work by the force that keeps the car moving at constant speed
despite friction. (The energy content of gasoline is 1.3 ✕
108 J per gallon.)
(a) What is the force exerted to keep the car moving at constant
speed?
N
(b) If the required force is directly proportional to speed, how
many...
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