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Unformatted text preview: Milky Way Galaxy. 3. Three reasons why a pendulum could not work on an ocean voyage are as follows: I. The metal in the pendulum would expand and contract with changes in temperature, which affected the accuracy of its time keeping. II. Pemdulums are also meant for placement on a stable and still wall. The rough thrashing of the ocean and the tumultuous waves rendered the pendulum significantly useless. III. The period of a pendulum depends on g, which changes slightly, depending on distance from equatior. 4. A = (2)^2(R of Eath)/t^2 g = 9.8m/s^2 = [(2)^2(6.37*10^6m)( X )(1day)^2(1hour)^2(1min)^2]/ [(1day)^2(24hrs)^2(60min)^2(60sec)^2] Solve for x you find that X = 291.50; therefore, the earth needs to rotate 291.50 times per day in order to have a centripetal acceleration at the equator equal to g. 5. 6. 7. 8. 9. 10....
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