How much does the board weigh

Reference no: EM1310358

Q1. A see saw is made of a uniform board 2.6 m long. A girl weighing 440 N sits on the left end, and a boy weighing 640 N sits on the right end. The see saw is balanced as the board is pivoted 1.1 m from the right end. How much does the board weigh?

Q2. All distant galaxies are moving away from us. Describe why this does not imply that we are at the center of universe.

Reference no: EM1310358

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