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Q.

An astronaut travels from the earth to the moon. How does his weight and mass change on the moon with respect to earth?

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a

Mass remains constant, weight changes

b

Weight remains constant, mass changes

c

Both mass and weight remain constant

d

Both mass and weight changes

answer is A.

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Detailed Solution

The correct option is

1

.
Mass is the fundamental property of all the matter in this world. Being a fundamental property, mass never changes and remains constant always. However, weight is the product of the mass and that place’s gravitational acceleration. Since the gravitational acceleration changes from place to place, the weight changes. Also, the value of gravitational acceleration is different for different planets. Hence, the astronaut’s mass remains constant, and the weight changes.

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An astronaut travels from the earth to the moon. How does his weight and mass change on the moon with respect to earth?