# Comparing gravitational and inertial mass

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#1

I am struggling to understand what they mean and the formulas associated with them - can somebody help understand these?
So like i don't understand
gravitational and inertial mass
Thanks
0
2 years ago
#2
You're not being clear enough about what you're struggling with IMO

FWIW

Inertial mass of an object determines the amount of force needed to accelerate that object. The formula is F=ma (also known as Newtons second law)

Gravitational mass of an object determines the amount of weight force which that object experiences in a gravitational field.

The questions are about different ways of measuring mass
you can measure mass by accelerating an object with a known force
you can measure mass by comparing the weight force acting on two different objects in a gravitational field using a pan balance.
0
#3
(Original post by Joinedup)
You're not being clear enough about what you're struggling with IMO

FWIW

Inertial mass of an object determines the amount of force needed to accelerate that object. The formula is F=ma (also known as Newtons second law)

Gravitational mass of an object determines the amount of weight force which that object experiences in a gravitational field.

The questions are about different ways of measuring mass
you can measure mass by accelerating an object with a known force
you can measure mass by comparing the weight force acting on two different objects in a gravitational field using a pan balance.
Hey thanks! so I am still a bit confused about gravitational force is it just weight of an object so mg?
Also have no idea what you meean by this "you can measure mass by comparing the weight force acting on two different objects in a gravitational field using a pan balance."
lemme know pls 0
2 years ago
#4
(Original post by h26)
Hey thanks! so I am still a bit confused about gravitational force is it just weight of an object so mg?
Also have no idea what you meean by this "you can measure mass by comparing the weight force acting on two different objects in a gravitational field using a pan balance."
lemme know pls pan balance is one of these ^^^
0
#5
(Original post by Joinedup)

pan balance is one of these ^^^
so Ik what a pan balance is - just confused with what you mean by the statement "you can measure mass by comparing the weight force acting on two different objects in a gravitational field using a pan balance." like measure the mass of what?
gravitational force is it just weight of an object so mg right?
0
2 years ago
#6
(Original post by h26)
so Ik what a pan balance is - just confused with what you mean by the statement "you can measure mass by comparing the weight force acting on two different objects in a gravitational field using a pan balance." like measure the mass of what?
gravitational force is it just weight of an object so mg right?
yeah weight is proportional to mass.

equal weights in the same gravitational field means equal masses, you're assuming the gravitational field strength is the same at both pans but this is a reasonable assumption.
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