SCIENCE
PHYSICAL SCIENCES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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the new planet has less gravity than Earth.
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the new planet has the same gravity as Earth.
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the new planet has more gravity than Earth.
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the gravity of the planet doesn’t matter. Weight is the same everywhere in the universe.
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Detailed explanation-1: -According to Newton’slaw of universal gravitation, the astronaut’s weight on the new planet will be greater. than his weight on Earth if: The new planet has less mass than Earth but the same radius.
Detailed explanation-2: -An astronaut is planning a trip to a newly-discovered planet. According to Newton’s law of universal gravitation, the astronaut’s weight on the new planet will be greater than his weight on Earth if: the new planet has more mass than Earth but the same radius.
Detailed explanation-3: -Mass stays the same regardless of location and gravity. You would have the same mass on Mars or Jupiter as you do here on Earth. Your weight is different on other planets due to gravity. However, your mass is the same everywhere!
Detailed explanation-4: -Mass is a measure of how much matter is in an object, while weight is a measurement of the effective force of gravity on the object. The amount of matter in the astronaut does not change; therefore, she has the same mass on the moon as she has on Earth. Her weight, however, will change due to the change in gravity.
Detailed explanation-5: -This means, if you weigh 40 kg (88 lbs) on Earth you would weigh 94 kg (207 lbs) on Jupiter. But even though you may weigh more, your mass doesn’t change! This is because your weight is based on the pull of gravity, but your mass is just the “stuff” you’re made of.