True or false a book has the same weight on the earth and on the moon?

Answer 1

The weight of an object would be different due to less gravit. It shouldn't affect mass. Mass is a collection of particles, and if gravity changed that, then it would kill all the astronauts and destroy all satelites. However, in microgravity, the human body experiences changes such a bone loss, intense radiation exposure, and diet issues.

Answer 2

This is false. The book has the same mass wherever it is - mass depends on the amount of matter in the book. If a book has a mass of 1 Kg it will mass 1 Kg even if it is floating free in space. The weight of the book is a different matter. The weight of an object is the force that attracts it to the planet ( or moon ) on which it is. On the surface of the Moon the book would weigh about 150 g. In free fall it will have no weight at all.

Answer 3

That's a very important question.

Everybody thinks of gravity as the force that one body exerts on another one. And that idea

is what leads to problems in understanding it.

It works a lot better once you begin to realize that the force of gravity always works two ways,

in both directions between two masses. Both objects are pulled with equal force, and the strength

of the force depends on both of them.

It depends on the product of the masses ... change either mass, and the force changes on both.

It depends on the distance between them ... move either object, and the force changes on both.

If the force of gravity only depended on your mass, then you'd never have to be weightless in space ...

you could just carry a Bowling ball along with you in your ship, and it could provide the gravity to

keep your weight normal.

But that doesn't work. Your "weight" is the product of your mass and the mass of the other

object, whatever that object happens to be. If the other object is the earth, your weight is

a certain number. If the object is a larger planet, your weight is greater. If it's the moon, your

weight is about 16% of the earthly number. And if the other object is a bowling ball, then your

weight is very small.

And in every case, the other object feels the sameforce toward you as you feel toward it.

In your gravitational field, the earth has the same weight as the number you read on your

bathroom scale!

Now, isn't that a lot more elegant, and courageous, and useful, than one body pulling on

the other one ?

Answer 4

No, the "Mass" does not change, however the force of gravity (thus, the "weight") does.

It's alot like being underwater. Your weight changes, but just because you're submerged, does not mean that you lost a bunch of mass. Although the underwater example, is not due to gravity, but to do the buoyancy force.

Answer 5

FALSE.

a book has the same amount of 'matter' ( mass) on the Moon as on Earth.

However, the gravitational acceleration on the Moon is less than on Earth, so it will weigh less on the Moon.

Answer 6

false
It is false. Your weight would be less on the moon but your mass would be the same.