Today in class we learned that a crane, a slope , and a spiral staircase all can get an object from the floor to the same point with the same anount of work. For each one there is a different amount of force and displacement, but they all have the same amount of work. When we made a graph for each one they all looked the same.
After we did that we moved on to a pendulum problem. That was to see if you let it go at one point it would end up at same point on the otehr side, and it did. The other problem that we solved was what if we did the same thing but this time there was a poll that was in the middle. When we watched the video we saw that it would hit the poll and go to the same point.
mj
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ReplyDeleteI would like to add that for the crane, ramp, spiral stair case problem they all use the same amount of work but have different force values. For example the ramp uses less force then just picking up the object because by using the ramp you get more displacement. Because the formula for work is force*displacement=work the more displacement we have the less force is needed. Also the reason the pendulum is able to maintain the same height is because none of the energy gets used and instead the energy is transformed from kinetic the gravatational potential to kinetic, etc.
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