Millikan, Robert Andrews, Gale, Henry Gordon · Boston : Ginn and Co. · leaf 101
city must a ball be shot upward to rise to theheight of the Washington ^Monument (555 ft.)? How long before itwill return? 16. Fig. 81 represents the pendulum and escapement of a clock.The escapement wheel D is urged in the direction of the arrow by theclock weights or spring. The slight pushes… … Fig.81 NEWTOl^S LAWS OF MOTION 83 18. A pendulum that makes a single swing per second in J^ewYork City is 99.3 cm., or 89.1 in., long. Account for the fact that aseconds pendulum at the etpiator is ;39 in. long, while at the poles it is39.2 in. long. 19. IIow long is a pendulum whose period is 3…
Physics
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