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Fundamentals of Physics Chapter 6 Solutions: Force and Motion-II

Halliday Resnick & Walker Fundamentals of Physics Volume 1 Solutions for Chapter 6 ‘Force and Motion-II’ discusses different concepts like friction and frictional force, static and kinetic frictional force, drag force, terminal speed, and uniform and non-uniform circular motion. These concepts in Resnick Halliday Physics Solutions will help you understand how an object slides and with what speed and force, why the heavy object did not slide in less time, and other related phenomena.

Resnick Halliday & Walker Fundamentals of Physics Volume 1 Force and Motion Solutions consist of 4 modules with 105 questions. The questions range from basic to advanced levels that are ideal to prepare for competitive exams like JEE and NEET. By solving the questions of the chapter you will be able to easily distinguish between static and kinetic friction, determine the magnitude and direction of frictional force, and apply Newton’s second law in various situations.

Instasolv, a team of well-experienced professionals makes collaborative efforts to render you the Solutions of Force and Motion Resnick Halliday and Walker Fundamentals of Physics Volume 1. The solutions are designed in a detailed manner so that you can understand even the basics of different concepts. Also, our team provides you with some tips and tricks to make your JEE physics preparations easier.

Important Topics for Resnick Halliday & Walker Fundamentals of Physics Volume 1 Solutions Chapter 6 Force and Motion – II

Resnick Halliday and Walker Fundamentals of Physics Volume 1 Force and Motion -II entirely focuses on the study of frictional force and its types, drag force as well as centripetal force. We will understand these three forces with the help of the question: ‘Why does an engineer consider all three types of forces before preparing a car?’ You will find the answers below.

Friction

Whenever a force makes a body slide along a surface, a frictional force acts from the surface on the body. The frictional force always acts parallel to the surface and is always directed to oppose the sliding portion. This happens because of cold welding which is the bonding between the atoms on the body and the atoms on the surface.

Answer to the above-listed question: Frictional force that acts on the car is necessary as if there is no frictional force, the car will easily slip on watery or oily surfaces.

Static Frictional Force

When a body does not slide, the frictional force is known as the static frictional force. When the body does not move the static frictional force as well as the component of the force that is parallel to the surface are equal in magnitude. Also, the force is directed opposite to that component. If there is an increase in the component, the force also increases.

Kinetic Frictional Force

If the body slides on a surface this frictional force is known as kinetic frictional force.

Drag Force

Drag force refers to the type of force that acts when there is a presence of relative motion between air and any other fluid and a body. Drag force opposes the relative motion by pointing in the direction in which the fluid or the air flows relative to the body.

Answer to the above-listed question: Drag forces that act on a car from the passing air must be reduced, else the car will eventually consume more fuel.

Terminal Speed

Whenever a blunt object falls far enough through the air, the magnitude of gravitational force, as well as drag force, becomes equal on the body. This is why the body then falls at a constant terminal speed. In the chapter, you will know about how to find the terminal speed of an object.

Uniform Circular Motion

Whenever a particle moves in a circular arc of the radius or in a circle at a constant speed the particle at that time is in a uniform circular motion. The particle then experiences centripetal acceleration. The centripetal acceleration comes into existence because of a net centripetal force that acts on the particle. Also, a particle can move in a circular motion if and only it has a net centripetal force that acts on it.

Answer to the above-listed question: Centripetal forces are crucial as if there will be no or less centripetal force, the car can easily slide into the wall.

Thus, this is why an engineer considers the three types of forces. The chapter will explain to you more interesting examples associated with daily life.

Exercise-Wise Discussion of Halliday Resnick & Walker Fundamentals of Physics Volume 1 Solutions Chapter 6 Force and Motion—II

Module 1: Friction

Resnick Halliday Module 1 of this chapter contains a total of 35 questions in which you are required to find the constant acceleration, the coefficient of kinetic function, the magnitude of a frictional force, the acceleration of a body, the coefficient of a kinetic function.

Module 2: The Drag Force and Terminal Speed

Resnick Halliday Module 2 contains 5 questions in which you will have to find the terminal speed, the drag force of an object.

Module 3: Uniform Circular Motion

There are around 13 questions in module 3 in which you have to find the least coefficient of static friction, the speed of the object that pushes it into motion, acceleration, the magnitude of friction, the period of the motion, the coefficient of kinetic function.