An astronaut travels from the earth to the moon. How do its weight and mass change?

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Mass remains constant, weight changes

Weight remains constant, mass changes

Both mass and weight remain constant

Both mass and weight changes

answer is A.

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Detailed Solution

Its weight changes, and mass remains constant.
Mass is the fundamental property of all the matter that exists in this world. The mass, being a fundamental property, never changes and remains constant always. Weight is defined as the product of the mass and the gravitational acceleration of that place. Since the gravitational acceleration changes from place to place, and hence the weight changes. Also, the value of gravitational acceleration is different for different planets. Hence the mass of the astronaut remains constant, and the weight changes.

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