two boys of masses 30 kg and 45 kg sits at the end a and b respectively of an adjnotable see saw of lengjt 10cm find the distance from the end B that the see saw must be pivoted so that the two ways will maintain a balance of the weight of the see saw is disregarded
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The doctor lands his tardis on a planet whose radius is 1.2x10^7m the acceleration due to gravity is 18m/s^2. what is the mass of the planet
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two boys of masses 30 kg and 45 kg sits at the end a and b respectively of an adjnotable see saw of...
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