What instrument measures mass?

Answer 1

A Beam balance (or Beam scale) is a device to measure weight or mass.

Answer 2

there is no exact instrument to measure mass. Since mass is a scalar quantity and everything on earth is subject to the gravitational constant of 9.8m/s2, mass cannot be measured on earth unless inside a vacuum.

weight on the other hand (kg m/s2), is a vector quantity, (mass x gravitational constant) then we could just make use of a normal weighing scale and divide it by 9.8m/s2.

Example:

on the weighing scale, a 980kg (shorthand for kg m/s2 or Newtons) object has an actual mass of 100KG.

Answer 3

Traditionally a balance was used to measure mass. Objects of known or accepted mass was balanced against another object of unknown mass. When the balance was level the two pans had the same mass. The term balance or scales is still used even though there is no balance used. The scales were the pans that the objects sat on.

Now electronic balances are used that gauge the mass of the objects. While you can measure mass with a spring loaded scale, it is less accurate than a balance as it relies on a spring loaded to a specific acceleration of gravity for any given mass. A change in altitude will change the results given on the scale, due to the actual change in gravitational force (it is small at only about 0.031% error for every kilometer increase in altitude)*. A balance would experience no such change as the mass of an unknown quantity is compared to the mass of a known quantity, thus negating any effects of gravity.

Another instrument that measures mass is an inertial balance. An inertial balance doesn't require gravity to work, so it can be used in space. It measures the mass of an object by attaching it to a spring and seeing how it affects the spring's period of oscillation.

Very tiny masses can be measured directly (using a "massometer"). But we normally use scales, which measure weight, which is directly proportional to mass (a property of matter equal to its resistance to a change in speed or direction of travel). The mass of an object is the same everywhere in the universe. Its weight, however, changes depending upon its location: a Bowling ball has greater weight on the surface of the Earth than it does on the Moon. Great confusion arises when people interchange units of weight with units of mass. Scientists, particularly physicists, are very careful about not using the terms interchangeably, but regular folks have no choice for practical applications. For example, when you weigh a regulation ten-pin bowling ball, the scale will tell you it "weighs" between 4 and 7 (3.63 to 7.27 actually) kilograms, even though the kilogram is, technically speaking, a unit of mass, not weight.

You can also measure the mass of an object using a scale, as long as you factor in the gravitational constant (G). For instance, in an environment with only 1/2 the gravity of That on earth, you would have to double the weight displayed on the scale to determine the actual mass. As an example, 10Kg of lead in a 0.5G environment would only "weigh" 5Kg on a scale...half as much as on earth, even though its mass is unchanged.

Answer 4

A tripple beam balance is use to measure mass.

Answer 5

In Physics, you can't measure mass; you can only compare it with a known mass i.e, weigh it. On Earth's surface weight in Kg = mass in Kg.

Answer 6

I think ordinary balance is the best instrument to measure mass of an object. On the other hand, if you want to measure weight of an object, you use spring balance.

Answer 7

SPRING BALANCE ,BEAM BALANCE .WEIGHING MACHINE

Answer 8

Every instrument has mass, and so is capable of measuring mass.

-John

Answer 9

SPRING BALANCE ,BEAM BALANCE .WEIGHING MACHINE

Answer 10

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Answer 11

triple beam balance is used measuring mass

Answer 12

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Answer 13

beam balancer

Answer 14

a triple beam balance

Answer 15

Like what?

Answer 16

beam balance

Answer 17

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Answer 18

Do you find that all living beings need the same kind of food

Answer 19

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Answer 20

A SPRING BALANCE

Answer 21

beam balance

Answer 22

Beam balance

Answer 23

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Answer 24

the guitar

Answer 25

1000

Answer 26

beam balance

Answer 27

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Answer 28

BALANCE