RotationalWork

RotationalWork - during a finite rotation (from [theta] i...

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Work Figure 11.9. Work done by a force. Suppose a particle with mass m is connected to the end of a rod (with negligible mass). Under the influence of a force F, the system rotates through an angle [Delta][theta] (see Figure 11.9). The work done by the force F is determined by the tangential component of F Here r d[theta] is the length of the arc traversed by the particle. The total work done by the force
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Unformatted text preview: during a finite rotation (from [theta] i to [theta] f ) is given by This equation is very similar to what we have derived for linear motion: The total work done can now be calculated or This can be rewritten as This relation shows that the work done by the torque acting on a rigid body is equal to the change in rotational kinetic energy of that body....
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