Question

A diver is diving into water, without external torque his angular velocity is doubled,
then the ratio of his initial to final moment of inertia is

​

Answer 1

Answer:

As there is no external torque, so Iω=constant

Thus, I

1

ω

1

=I

2

ω

2

Now, as ω

2

=2ω

1

⟹

I

2

I

1

=

1

2

Answer 2

Step-by-step explanation:

As there is no external torque, so

I

ω

=

c

o

n

s

t

a

n

t

Thus,

I

1

ω

1

=

I

2

ω

2

Now, as

ω

2

=

2

ω

1

⟹

I

1

I

2

=

2

1