How does $W=0$ for the following equation and question on conservative forces?
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We have W=fdcos(θ)W=fdcos(θ) = Kinetic Energy + Potential Energy. Our example is a 1010kg ball is falling from a height of 1010m. I can see why Kinetic Energy and Potential Energy cancel out to become 00, but how does W=fdcos(θ)W=fdcos(θ) come to 0 when theta is equal to 180180 degrees as it is falling, so cos(180)cos(180) is −1−1 and d=10d=10, and f=10gf=10g. This does not equal 0. Thanks for the help I am probably making a mistake.
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A Conservative force is a force whose work done is independent of the path taken and depends only on the initial and final position.
Conservative forces are an important aspect of Physics. Many forces of nature are conservative like Gravitational Force, Electrostatic Force ,Magnetic Force , Elastic Force(Spring's Force).
Before reading this page make sure you have read Work-Kinetic energy theorem , Kinetic Energy. It would be good if you would be familiar with Potential Energy
Conservative forces are an important aspect of Physics. Many forces of nature are conservative like Gravitational Force, Electrostatic Force ,Magnetic Force , Elastic Force(Spring's Force).
Before reading this page make sure you have read Work-Kinetic energy theorem , Kinetic Energy. It would be good if you would be familiar with Potential Energy
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