(исочис
ouy
If earh shriks suddenly to half of
its present radius with out change
in mass, the duration of the day
will be
(a) 24 hors
(b) 6 hours
(C)
96 hours (d)12 hours
Answers
Answered by
4
b) 6 hours
I hope this will help you
vanshikas937:
pls explain
Angular momentum is conserved hence,
L
i
=L
f
I
I
ω
i
=I
f
ω
f
5
2
mr
2
ω
i
=
5
2
m(
2
r
)
2
ω
f
∴ω
f
=4ω
i
or,
T
f
2π
=4×
T
i
2π
∴T
f
=
4
T
i
=
4
24
=6hours
L
i
=L
f
I
I
ω
i
=I
f
ω
f
5
2
mr
2
ω
i
=
5
2
m(
2
r
)
2
ω
f
∴ω
f
=4ω
i
or,
T
f
2π
=4×
T
i
2π
∴T
f
=
4
T
i
=
4
24
=6hours
okk thank u
bro bro! maine bhi go#### kiya hai ab me itni raat ko explain kaise kru
but u can search the same question on it and u will get that
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