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Other Forms of Work and Energy

So far we have discussed only F dx work and kinetiL, potential, and internal energies. In this section we consider some other kinds of work and energy. [Pg.126]

In most modern machinery, work is done by roltating shafts. In a simple crank arrangement (Fig. 4.13), a force is being exerted on a crank and is being resisted by the shaft to which the crank is attsiched the torque T in the shaft is given by [Pg.126]

If we now allow the shaft to move, with the force always being applied at right angles to the crank, the distance moved is  [Pg.126]

Here we see that the power output of a rotating device is the product of its torque T and its rotating speed (w = revolutions per minute or per [Pg.127]

Much of the work of modern societies is done electrically. It is shown in texts on electricity that the force required to move a charge 2, in an electric field is [Pg.127]


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