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 A one-kilogram mass on the Moon weighs about 1.6 newtons.  A balloon in microgravity | ||||
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RATINGS: Sites are rated from 1 owl (good) to a high of 5 owls. Read more- Alan Shepard Plays Golf, Sends It "Miles and Miles"
"Fore!" A game of on the Moon has a whole lot of double-eagle shots. In fact, the ball might just soar on to the next hole. Because the Moon has less mass than Earth, the Moon's gravity is weaker. Thus, an object weighs less on the Moon than on Earth. Alan Shepard demonstrates this in one of NASA's videos. It may take a while to load, but it's worth it!
- Your Weight on Other Worlds
The next time a carny tries the old "guess your weight" trick, see if he or she can guess what it would be on the Moon. This website can do it, and it won't charge a dime. The same mass has different weights on each of these eight planets, five moons, and three stars at this Exploratorium website discussing the relationships among gravity, mass, and distance.
- The Crash of Flight 143
In July 1983, as Canada was switching from the British system of measurement to the metric system, Air Canada flight 143 completely ran out of fuel at 26,000 feet. Among the worst errors: someone didn't check the units when calculating the amount of fuel in the plane. Yes, checking units while working on physics problems is that important. Happily, everybody on flight 143 survived.
Crash Course in Density Find out where the calculations went wrong.
- What Is Microgravity?
Astronauts in orbit feel like they are weightless because they are constantly free-falling. Why don't they ever hit Earth? This NASA site delves into the phenomena of apparent weightlessness in orbit and explains how NASA's shuttle orbiters actually achieve this amazing state of motion.Balloon Popping in Space Ever wonder what happens when a water balloon is popped in space?
- How Can You Find the Mass of the Earth?
Earth can't be measured on a scale, so how do scientists figure out its mass? This readable, text-only PhysLink website answers that question.
- Physics of Star Trek
"Klingons approaching! Activate cloaking device. Deflector shields on. Set phasers to stun." Ah, the technology of Star Trek. In principle, the laws of gravity could be applied to develop such technology as cloaking shields, but it wouldn't be very practical. New Scientist covers the real-life possibilities of the futuristic scientific gizmos of this popular science-fiction show.
Mass and Weight
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