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Chapter 7
Work is done when energy is transferred from one object to another. In other words, work is when a force acts on something that undergoes a displacement ...
Work is done on an object when energy is transferred to the object. In other words, work is done when a force acts on a body that undergoes a displacement ...
The universe is composed of matter in different forms, and all forms of matter contain energy. The different forms of energy on Earth originate from ...
Potential energy is also known as energy at rest or stored energy. Common types of potential energy include the gravitational potential energy stored in ...
The amount of kinetic energy of an object depends on its mass and speed. Consider two balls of different masses rolling down an inclined plane at the same ...
It’s plausible to suppose that the greater the velocity of a body, the greater effect it could have on other bodies. This does not depend on the ...
The kinetic energy of a particle is one-half of the product of the particle’s mass and the square of its speed. Note that just as Newton’s ...
According to Newton’s second law of motion, the sum of all the forces acting on a particle (net force) determines the rate of change in the momentum ...
When an object is acted upon by a variable force, the amount of work done and the change in energy of the object can be more complex to calculate compared ...
The work-energy theorem can be generalized to the motion of a particle along any curved path. The simple argument here is that the curved path can be ...
The center-of-mass framework helps to easily describe the work done on rigid bodies. Since the internal forces in a rigid body do no work, they can be ...
The total work done on an object acted upon by multiple forces can be computed using two methods that give the same result. In one method, the work done ...
Gravitation is one of the four fundamental forces in nature. The force between objects on Earth and Earth itself is called gravity. Like other forces, ...
The concept of work involves force and displacement; meanwhile, the work-energy theorem relates the net work done on a body to the difference in its ...
The relationship between work done and the time taken to do it can be explained using the concept of power. For example, several sprinters in a race may ...
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