The example of mass and weight being proportional is Force = mass * acceleration.
The proportionality can be direct or inverse proportionality.
Direct proportionality can be defined as the increase in the second quantity if there is an increase in the first quantity when both quantities are related.
Inverse proportionality can be defined as a decrease in the second quantity when the first quantity is increased when both quantities are related.
Mass and weight are proportional to each other.
For that we can consider the example given below:
weight is the force exerted by the earth's gravity on the particle.
we know that
force = Mass * acceleration
as weight = force
weight = mass * acceleration
so if the acceleration is constant the increasing weight mass also increases.
so at constant acceleration weight and mass are directly proportional.
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