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. 

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 

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

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 

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 

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