is the amount of matter contained in a substance while weight
is the pull of gravity on an object.
The SI unit for mass is the Kg
while weight is the newton (N)
. Mass is constant regardless of place while weight changes with place.
Weight = Mass x g, where g is the gravitational force
Differences between mass and weight Mass
It is the quantity of matter in a body
It is measured in kilograms
It is the same everywhere
It is measured using a beam balance
Has magnitude only Weight
It is the pull of gravity on a body
It is measured in newton's
It changes from place to place
Measured using a spring balance
Has both magnitude and direction
-- select another example --
A spring balance is the most common tool for measuring force.
The length of a spring is 16.0 cm. its length becomes 20.0 cm when supporting a weight of 5.0 N.
Calculate the length of the spring when supporting a weight of 6.0 N.
5N stretches to a length of (20.0 - 16.0) = 4cm
hence 1N = 4 ÷ 5 = 0.8 cm
Therefore, 6.0 x 0.8 = 4.8cm
Overall length will be: 16.0 + 4.8 = 20.8cm