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I've always found in physics textbooks (and in general too) that when a paragraph or question mentions mass it actually is succeeded by weight of the object in question.

For example,

The mass of the man standing on top of the board is 70kg.

Why is this?

Qmechanic
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Chatrapal Singh Rathore
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1 Answers1

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Your question is not easy to understand, in textbooks it is understood, that on earth the man has a weight of $m*g$ which matters if he moves upward or downward, his mass matters if he moves horizontally.

trula
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