About 140 pounds (64 kilograms) of highly enriched uranium-235 was used to create Little Boy, a nuclear-fission bomb that worked by shooting a large, hollow cylinder of uranium over a smaller uranium insert. Far from little, the bomb weighed about 9,700 pounds (4,400 kg).
How heavy was the bomb dropped on Hiroshima?
9,700 pounds This gun-type uranium bomb, nicknamed Little Boy, weighed 9,700 pounds. The bomb was dropped on Hiroshima, Japan, August 6, 1945, at 8:15 AM. A B-29 dropped the bomb from 31,000 feet. The bomb exploded about 1,500 feet above the city with a force of 15,000 tons of TNT.
How much does a nuclear bomb weigh in tons?
Nuclear bombs have had yields between 10 tons TNT (the W54) and 50 megatons for the Tsar Bomba (see TNT equivalent). A thermonuclear weapon weighing little more than 2,400 pounds (1,100 kg) can release energy equal to more than 1.2 million tons of TNT (5.0 PJ).
What is the blast radius of a 50 megaton nuclear bomb?
2.3 km The Soviet Union built the largest thermonuclear bomb in human history. The name of the bomb was Tsar Bomba. It had a yield of 50 megatons of TNT. Fireball radius was 2.3 km or covering 16.61 square kilometers.