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Wikipedia says the dry mass is 899 kg, which is about the 2000 pounds of weight (on Earth) mentioned by GP. https://en.wikipedia.org/wiki/Curiosity_(rover) htt
by exDM69 10y ago
Wikipedia says the dry mass is 899 kg, which is about the 2000 pounds of weight (on Earth) mentioned by GP.
https://en.wikipedia.org/wiki/Curiosity_(rover) https://en.wikipedia.org/wiki/Curiosity_(rover)
- Cthulhu_ 10y agoWhich would make it about 338 kilos on Mars - wikipedia lists Mars' gravity as 0.376g (vs earth's 1)
- masklinn 10y agoTechnically that would make it 899kg on Mars, the kilogram is a unit of mass. However the Rover would weigh ~8800N on Earth and ~3300N on Mars.
- masklinn 10y agoThe pound is a unit of mass, same as the kg (it's defined as exactly 0.45359237kg). Just as 900kg is 900kg everywhere, 2000lb is 2000lb everywhere. The colloquial weight is literally a force, and its imperial unit is thus the pound-force.
- samcat116 10y agoThis is incorrect. The pound is a unit of force, similar to a Newton. The pound-mass(notated lb-m) is similar to the kg. The conversation you gave above is based on Earth gravity for weight.
- masklinn 10y ago> This is incorrect. The pound is a unit of force, similar to a Newton. The pound-mass(notated lb-m) is similar to the kg. That's the pound-force (lbf). Pound and pound-mass are aliases. Indeed the official facts sheet defines the mass of the rover in kg and pounds. > The conversation you gave above is based on Earth gravity for weight. My comment is based on mass being an intrinsic property of matter, gravity does not enter the equation.
- kd5bjo 10y agoThere are about a dozen different units that are all called "pounds," and you have to rely on context to know which is meant. When I took physics in high school, pounds were always force (abbreviated lbf) and we used slugs for mass ( https://en.m.wikipedia.org/wiki/Slug_(mass) https://en.m.wikipedia.org/wiki/Slug_(mass) )