Andrews, Ernest John, 1863-, Howland, Howard Newell, 1865- joint author · New York, London, The Macmillan company · leaf 68
Fig. §§ 95-97] GRAVITY 58 … of the body. So it is necessary only to determine wliatincrease in length is produced by a unit force; twicethat increase would indicate two unitsof force, and so on. But we must now consider further theunit of force. In determining weightthe gravity unit is usually used; thatis, the force existing…
Physics
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