Question

If A and B are two bodies with masses 10 kg and 50 kg respectively then which body has more inertia? Also calculate the ratio of the inertia of two bodies.

Answer 1

We know that inertia increases with mass as well as decreases with decrease in the same.

We see here:
Body B has more mass than Body A hence has more inertia.

We know the relation between kg and kgf(unit to measure inertia),
1 kg = 1 kgf

Therefore the inertia of the given bodies will be as follows:

Inertia of body A = 10 kg = 10 kgf

Inertia of body B = 50 kg = 50 kgf

Ratio of their inertia, A:B = 10 : 50 = 1 : 5

Answer 2

hey
--------

inertia
------------

the tendency of an object to remain at rest or at uniform motion in a straight line until and unless compelled by external force

it depends on
--------------------

mass
velocity

as mass increases the inertia of body increases!!
----------------------------------

hence body B having mass 50 kg will have more inertia

ratio of inertia of two bodies =

A:B = 10:50 = 1:5

hope helped