Part

 1 I  |    Hence, we conclude that the height of the fall being the same,
 2 I  |      one; and, with double the height of fall, the weight will
 3 I  |      the work increases as the height of fall. Hence, we may take
 4 I  | product of the weight into the height off all as a measure of
 5 I  |  machine, by the magnitude and height of fall of such a weight
 6 I  |         therefore, to the same height, the one man must necessarily
 7 I  |       These are used where the height from which the water comes
 8 II |       is thereby raised to the height A a. Hence my arm must exert
 9 II |    line, which is equal to the height A a, to which my arm had
10 II |    acquired in moving from the height A a is capable of again
11 II |   again raising it to an equal height, B b. The velocity of the
12 II |   circumstances, to as great a height as possible.2 This does
13 II |        which has fallen from a height has acquired a certain velocity
14 III|   perform in falling through a height of 425 metres.~In order
15 III|      necessarily sink from its height, and, when it has fallen