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In the case of block and tackle arrangement mechanical advantage increase with the number of pulley. Why?
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What happens to the velocity of the car when the upward pull of the cable is greater than the downward pull of gravity as the car rises toward the top?
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The roller coaster from problem #1 then tops a second hill at 15.0 m/s, how high is the second hill? 91.5 m 79.2 m 80.0 m 68.5 m
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Cathy is pedaling down a steep hill on her bicycle and wants to be able to coast up the next hill, which is 25 meters high, without pedaling. cathy and her bicycle have a mass of 75 kg. assuming her bicycle is 100% efficient, what would her speed have to be?
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What is a subatomic particle with a negative charge and very little mass?
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In the case of block and tackle arrangement mechanical advantage increase with the number of pulley....
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