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The stone or stone weight (abbreviation: st.) [1] is an English and British imperial unit of mass equal to 14 avoirdupois pounds (6.35 kg). [ nb 1 ] The stone continues in customary use in the United Kingdom and Ireland for body weight .
Stones, and every Stone to weigh xiv. l. The third development is a set of 14th-century bronze weights at the Westgate Museum in Winchester, England. The weights are in denominations of 7 pounds (corresponding to a unit known as the clip or wool-clip), 14 pounds (stone), 56 pounds (4 stone) and 91 pounds ( 1 ⁄ 4 sack or woolsack).
One slug is a mass equal to 32.17405 lb (14.59390 kg) based on standard gravity, the international foot, and the avoirdupois pound. [3] In other words, at the Earth's surface (in standard gravity), an object with a mass of 1 slug weighs approximately 32.17405 lbf or 143.1173 N. [ 4 ] [ 5 ]
The long or imperial hundredweight of 8 stone or 112 pounds (50.80 kg) is defined in the British imperial system. [ 2 ] Under both conventions, there are 20 hundredweight in a ton , producing a " short ton " of 2,000 pounds (907.2 kg) and a " long ton " of 2,240 pounds (1,016 kg).
The kilogram, symbol kg, is the SI unit of mass. It is defined by taking the fixed numerical value of the Planck constant h to be 6.626 070 15 × 10 −34 when expressed in the unit J⋅s, which is equal to kg⋅m 2 ⋅s −1, where the metre and the second are defined in terms of c and Δν Cs. —
N = kg m/s 2; Pa = N/m 2 = kg/(m s) J = N m = kg m 2 /s 2; W = J/s = N m/s = kg m 2 /s 3; Furthermore, prior to the revision the SI base unit of electric current, the ampere (A), was defined as the current needed to produce a force of 0.2 μN between 2 parallel wires 1 m apart for every metre of length. Substituting these parameters into ...
A sack of coal was 16 stone, or 224 pounds (102 kg), while the weight of a sack of wool depended on who was selling it. A sack of grower's wool was 3 + 1 ⁄ 4 hundredweight or 364 pounds (165 kg), whereas a sack of dealer's wool was considerably lighter, at 240 pounds (109 kg). [11]
Body weight 1888 drop 1892 drop 1913 drop Stone lb kg ft cm ft cm ft cm 14.0: 196: 89 6′5" 196 4'3½" 131 5′1" 155 13.5: 189: 86 6′8" 203 4'5" 135 5′3½"