Explanation Write the expression for frictional force. F fric = μ N (I) Here, F fric is the frictional force, μ is the coefficient of friction, and N is the normal force. From the equation (I), the down force will increase the normal force exerted on the car, therefore increasing friction between the wheel and the road. This is not necessary because for racing car we need to increase the acceleration to attain fast riding and in this case the car needs to break

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ISBN: 9780321601834

Author: Jerry D. Wilson, Anthony J. Buffa, Bo Lou

Publisher: Addison-Wesley

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Question

Chapter 4, Problem 20CQ

To determine

Does down force desired to the Indy racing car and why the car make heavier.

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Chapter 4, Problem 19CQ

Chapter 4, Problem 21CQ

Chapter 4 Solutions

College Physics

Ch. 4 - Prob. 1MCQ Ch. 4 - A force (a) always produces motion, (b) is a...Ch. 4 - If an object is moving at constant velocity, (a)...Ch. 4 - If the net force on an object is zero, the object...Ch. 4 - The force required to keep a rocket ship moving at...Ch. 4 - Prob. 6MCQ Ch. 4 - Prob. 7MCQ Ch. 4 - The weight of an object is directly proportional...Ch. 4 - Prob. 9MCQ Ch. 4 - A brick hits a glass window. The brick breaks the...

Ch. 4 - Prob. 11MCQ Ch. 4 - Prob. 12MCQ Ch. 4 - The condition(s) for translational equilibrium is...Ch. 4 - Prob. 14MCQ Ch. 4 - Prob. 15MCQ Ch. 4 - Prob. 16MCQ Ch. 4 - Prob. 17MCQ Ch. 4 - Prob. 1CQ Ch. 4 - Prob. 2CQ Ch. 4 - Prob. 3CQ Ch. 4 - Prob. 4CQ Ch. 4 - Prob. 5CQ Ch. 4 - The following is an old trick (Fig. 4.28). If a...Ch. 4 - Prob. 7CQ Ch. 4 - A student weighing 600 N crouches on a scale and...Ch. 4 - An astronaut has a mass of 70 kg when measured on...Ch. 4 - In general, this chapter has considered forces...Ch. 4 - Prob. 11CQ Ch. 4 - Prob. 12CQ Ch. 4 - Prob. 13CQ Ch. 4 - Prob. 14CQ Ch. 4 - Prob. 16CQ Ch. 4 - Prob. 17CQ Ch. 4 - Identify the direction of the friction force in...Ch. 4 - Prob. 19CQ Ch. 4 - Prob. 20CQ Ch. 4 - Prob. 21CQ Ch. 4 - Prob. 22CQ Ch. 4 - Prob. 23CQ Ch. 4 - Which has more inertia, 20 cm3 of water or 10 cm3...Ch. 4 - Prob. 2E Ch. 4 - In Exercise 2, if the 35-N force acted downward at...Ch. 4 - A net force of 4.0 N gives an object an...Ch. 4 - Prob. 5E Ch. 4 - Prob. 6E Ch. 4 - A 5.0-kg block at rest on a frictionless surface...Ch. 4 - (a) You are told that an object has zero...Ch. 4 - A fish weighing 25 lb is caught and hauled onto...Ch. 4 - A 1.5-kg object moves up the y-axis at a constant...Ch. 4 - Three horizontal forces (the only horizontal ones)...Ch. 4 - Prob. 12E Ch. 4 - Prob. 13E Ch. 4 - Prob. 14E Ch. 4 - IE ● A 6.0-kg object is brought to the Moon, where...Ch. 4 - A gun is fired and a 50-g bullet is accelerated to...Ch. 4 - Prob. 17E Ch. 4 - Prob. 18E Ch. 4 - Prob. 19E Ch. 4 - Prob. 20E Ch. 4 - Prob. 21E Ch. 4 - Prob. 22E Ch. 4 - Prob. 23E Ch. 4 - Prob. 24E Ch. 4 - An object (mass 10.0 kg) slides upward on a...Ch. 4 - In an emergency stop to avoid an accident, a...Ch. 4 - Prob. 27E Ch. 4 - A force of 10 N acts on two blocks on a...Ch. 4 - Prob. 29E Ch. 4 - In a pole-sliding game among friends, a 90-kg man...Ch. 4 - A book is sitting on a horizontal surface. (a)...Ch. 4 - In an Olympic figure-skating event, a 65-kg male...Ch. 4 - A sprinter of mass 65.0 kg starts his race by...Ch. 4 - Jane and John, with masses of 50 kg and 60 kg,...Ch. 4 - Prob. 35E Ch. 4 - A 75.0-kg person is standing on a scale in an...Ch. 4 - Prob. 37E Ch. 4 - Prob. 38E Ch. 4 - The weight of a 500-kg object is 4900 N. (a) When...Ch. 4 - A boy pulls a box of mass 30 kg with a force of 25...Ch. 4 - Prob. 41E Ch. 4 - Prob. 42E Ch. 4 - Prob. 43E Ch. 4 - Prob. 44E Ch. 4 - Prob. 45E Ch. 4 - Assuming ideal frictionless conditions for the...Ch. 4 - Prob. 47E Ch. 4 - A55-kg gymnast hangs vertically from a pair of...Ch. 4 - A physicist’s car has a small lead weight...Ch. 4 - A 10-kg mass is suspended as shown in Fig. 4.41....Ch. 4 - Prob. 51E Ch. 4 - Prob. 52E Ch. 4 - Prob. 53E Ch. 4 - A horizontal force of 40 N acting on a block on a...Ch. 4 - The Atwood machine consists of two masses...Ch. 4 - Prob. 56E Ch. 4 - Prob. 57E Ch. 4 - Prob. 58E Ch. 4 - Prob. 59E Ch. 4 - In the frictionless apparatus shown in Fig. 4.43,...Ch. 4 - In the ideal setup shown in Fig. 4.43, m1 = 3.0 kg...Ch. 4 - A20-kg box sits on a rough horizontal surface....Ch. 4 - Prob. 63E Ch. 4 - Prob. 64E Ch. 4 - Prob. 65E Ch. 4 - Prob. 66E Ch. 4 - A 1500-kg automobile travels at 90 km/h along a...Ch. 4 - Prob. 68E Ch. 4 - Prob. 69E Ch. 4 - Prob. 70E Ch. 4 - Prob. 71E Ch. 4 - Prob. 72E Ch. 4 - Suppose the slope conditions for the skier shown...Ch. 4 - Prob. 74E Ch. 4 - A block that has a mass of 2.0 kg and is 10 cm...Ch. 4 - In the apparatus shown in Fig. 4.46, m1 = 10 kg...Ch. 4 - In loading a fish delivery truck, a person pushes...Ch. 4 - An object (mass 3.0 kg) slides upward on a...Ch. 4 - For the apparatus shown in Fig. 4.40, what is the...Ch. 4 - Prob. 81E Ch. 4 - Prob. 82E Ch. 4 - Prob. 83E Ch. 4 - Prob. 84E Ch. 4 - Prob. 85E Ch. 4 - Prob. 86E Ch. 4 - Prob. 87E Ch. 4 - Prob. 88E

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