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Mechanical EnergyLet a body be acted upon by a number of forces whose vector sum is equal to zero. The body moves uniformly and rectilinearly. All the forces may than be resolved into four components.
Figure 5.1
Forces Let us now consider the motion of a body with acceleration (curvilinear and non uniform motion). Now, The inequality between the forces
The work expended in accelerating a body is equal to the product of the mass of the body, the traversed distance, and the tangential acceleration. The work performed by the force of resistance and the work expended in accelerating the body
For
where v is the average velocity, which is equal
Since
Date: 2015-01-12; view: 1386
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