2012_1061_Lecture_Ch_078

2012_1061_Lecture_Ch_078

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Unformatted text preview: xample of work done by a varying force Figure 7.10a Figure 7.13 Kinetic Energy and the Work-Energy Principle  A moving object can do work on another object it strikes ➥ thus the object is said to have energy  The energy of motion is called Kinetic Energy Work-Energy Principle (continued) or  We define the quantity to be the translational kinetic energy K of the object  The above equation can be rewritten as:  The net work done on an object is equal to the change in the object’s kinetic energy Figure 7.15 Power   Average Power is the rate at which work is done by a force ¯= W P ∆t  Instantaneous power is an average power but when the interval of time is very very small W dW P...
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This note was uploaded on 02/03/2014 for the course PHYSICS 1061 taught by Professor Tsankov during the Fall '09 term at Temple.

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