Physics

Can a mass and weight of a body be negative . explain with example

#Mechanics

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`2 \times 3`	$2 \times 3$
`2^{34}`	$2^{34}$
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`\frac{2}{3}`	$\frac{2}{3}$
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`\sum_{i=1}^3`	$\sum_{i=1}^3$
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Comments

Mass can never be negative (except in case of anti-matter). But weight can be negative. However, the negative sign of the weight tells us that the weight acts in opposite direction to the one you have chosen. The reason behind this is the basic fundamental that mass is a scalar quantity whereas weight is a vector quantity.

Example : When you say that a body of mass $3~kg$ falling freely experiences a weight of $-3g~\uparrow$ (in the upward direction) it means that the body experiences a weight $3g$ in the downward direction. But you cannot say that the body has a mass $-3~kg$ in the upward direction as mass has no direction.

Ram Mohith - 2 years, 7 months ago

mass is also negative . the mass of hypothetical or anti- matter body have negative mass

umakshi sharma - 2 years, 7 months ago

I am talking in general about common masses. Wait I will mention it.

Ram Mohith - 2 years, 7 months ago

Mohmmad Farhat already mentioned it.

Ram Mohith - 2 years, 7 months ago

Weight is only negative because of the direction of the acceleration. It is a FORCE. There is no non theoretical explanation to your question. There can be NO negative mass. On that account i agree with you, Ram Mohith.

Krishna Karthik - 2 years, 7 months ago

THERE IS ALWAYS ANTI-MATTER! MWAHAHAHAH!

Mohammad Farhat - 2 years, 7 months ago

yes you are right . but please give me some examples

umakshi sharma - 2 years, 7 months ago

Lol

Krishna Karthik - 2 years, 7 months ago

jeez who disliked this... it's funny

Krishna Karthik - 2 years, 6 months ago

Math	Appears as
Remember to wrap math in `\(` ... `\)` or `\[` ... `\]` to ensure proper formatting.
`2 \times 3`	$2 \times 3$
`2^{34}`	$2^{34}$
`a_{i-1}`	$a_{i-1}$
`\frac{2}{3}`	$\frac{2}{3}$
`\sqrt{2}`	$\sqrt{2}$
`\sum_{i=1}^3`	$\sum_{i=1}^3$
`\sin \theta`	$\sin \theta$
`\boxed{123}`	$\boxed{123}$