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Efficiency of energy transfer on a rolling object
Member rating: No Rating | Words: | Submitted: Sun Jun 29 2008
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Aim: To investigate the efficiency of energy transfer on a rolling object. To do this I will investigate the input variable which is the factor we're changing. I shall change the height of the slope, which therefore means the input variable is the gravitational potential energy (G.P.E) as the height moved affects it. Prediction I predict that the transfer of energy will be more efficient the steeper the slope gets. This is because as the slope gets steeper, the marble will rotate less and less (so less rotational energy) and make less and less contact , and when the slope has a gradient of 100%, the marble will not rotate at all, but just fall straight down. The marble's energy changes from G.P.E, as it falls vertically, to kinetic energy. However, as it comes down the slope it rotates. Some energy is lost as rotational energy. G.P.E = K.E + Rotational Energy Therefore I...
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