Chapter 8
Work and Energy in One Dimensional Motion
8.1 WORK AND KINETIC ENERGY
Let us consider one-dimensional motion of a particle of mass m along the X axis. P and Q are two neighbouring points on the axis located at coordinates x and x + δx and lying on the path of the particle as it moves under the action of a (variable) force F (Fig. 8.1). We shall write Newton's 2nd law in a slightly different way.
FIGURE 8.1 Work is force X displacement.
As in the previous section, line (b) is an exact relationship between two infinitesimals, ...
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