difference between weight and mass on earth

[redtennis55]

What is the difference between these two. Whenever I read mass I think weight. Is this wrong? Like if the mass of a quarter is 5g, is the weight 5g?Sorry i do not kno much science.

[str33t]

mass is how much stuff the thing is made out of and weight is the measure of the force of gravitational pull on the object. if you are on the moon, you still have the same mass but different weight, because gravity is less, so there is less of a pull.

[redtennis55]

Ok cool. But, on the earth are weight and mass equal?

[BreakPoint]

Ok cool. But, on the earth are weight and mass equal?

Yes, as long as there are no other forces acting upon the object other than gravity.

[redtennis55]

thanks for the response

[TonyB]

Yes, as long as there are no other forces acting upon the object other than gravity.


WHAT????????????????????????????????



Holy cripes.


Mass and weight are NOT the same thing.

Weight is mass multiplied by the gravitational constant "g".

In English units, the standard unit of mass is 'slugs'. In the Metric system, it is 'kilograms.'

When you see "ounces" or "pounds," that's a weight. When you see "Newtons", that's the standard unit of force (weight) in the metric system.

Unfortunately, you see the terms "grams" and "ounces" used to represent the weight of a tennis racquet, which only adds to the confusion. However, the conversion multiplier from ounces to grams of 28.35 accounts for the inconsistency regarding the proper units, so in actuality, you're converting from a weight to a mass.

I.e., 10 oz. (weight) * 28.35 = 283.5 g (mass)

The proper means of weight comparison would be 10 oz. = 2.78 Newtons.

A pound is a measure of weight. A slug is the corresponding measure of mass. As an ounce is 1/16 of a pound (note: 1/16 is not a unit conversion multiplier, it is an actual fraction), it is also a measure of weight.

[DragonNeedSpank]

^--- tony here is correct i just learned this in my physics class from day 1

[BreakPoint]

WHAT????????????????????????????????



Holy cripes.


Mass and weight are NOT the same thing.

Weight is mass multiplied by the gravitational constant "g".

In English units, the standard unit of mass is 'slugs'. In the Metric system, it is 'kilograms.'

When you see "ounces" or "pounds," that's a weight. When you see "Newtons", that's the standard unit of force (weight) in the metric system.

Unfortunately, you see the terms "grams" and "ounces" used to represent the weight of a tennis racquet, which only adds to the confusion. However, the conversion multiplier from ounces to grams of 28.35 accounts for the inconsistency regarding the proper units, so in actuality, you're converting from a weight to a mass.

I.e., 10 oz. (weight) * 28.35 = 283.5 g (mass)

The proper means of weight comparison would be 10 oz. = 2.78 Newtons.

A pound is a measure of weight. A slug is the corresponding measure of mass. As an ounce is 1/16 of a pound (note: 1/16 is not a unit conversion multiplier, it is an actual fraction), it is also a measure of weight.

That's what we're saying!!!! Weight = Mass x Gravitational Force

On Earth, a mass is acted upon by the Earth's gravitational force. So, on Earth, Weight = Mass x Gravity. Since the Gravitational pull on Earth is a given and a constant, you can say that Weight = Mass on Earth as long as no other forces are acting upon it (like you pushing on the object down with your hand while it's on the scale.).

Thus, when we say "on Earth" what we're saying is that the mass is acted upon by the Gravitational Force of the Earth.

[BluBarry]

WHAT????????????????????????????????



Holy cripes.


Mass and weight are NOT the same thing.

Weight is mass multiplied by the gravitational constant "g".

In English units, the standard unit of mass is 'slugs'. In the Metric system, it is 'kilograms.'

When you see "ounces" or "pounds," that's a weight. When you see "Newtons", that's the standard unit of force (weight) in the metric system.

Unfortunately, you see the terms "grams" and "ounces" used to represent the weight of a tennis racquet, which only adds to the confusion. However, the conversion multiplier from ounces to grams of 28.35 accounts for the inconsistency regarding the proper units, so in actuality, you're converting from a weight to a mass.

I.e., 10 oz. (weight) * 28.35 = 283.5 g (mass)

The proper means of weight comparison would be 10 oz. = 2.78 Newtons.

A pound is a measure of weight. A slug is the corresponding measure of mass. As an ounce is 1/16 of a pound (note: 1/16 is not a unit conversion multiplier, it is an actual fraction), it is also a measure of weight.

Sorry Folks but this is as close to being correct as we Earthlings know about this subject thus far. Very Good TonyB .. that's what I would have said if you didn't beat me to it but far less words haha