If the mass of earth and radius suddenly
become 2 times and 1/4 th of the present value,
the length of the day becomes
Answers
Answered by
10
The length of the day becomes 3 Hours.
Explanation:
Angular momentum of earth will be conserved.
L = Iω
I1ω1 = I2ω2
r2 = 1/4r1
m2 = 2m
=> Iss = 2/5 mr^2
=> 2/5m1r1^2.ω1 = 2/5m2r2^2.ω2
=> 2/5 m1r1^2.ω1 = 2/5 2m1 x (1/4 r1)^2.ω2
After cancellation:
ω1 = 1/8 ω2
Now
T = 2π/ω1 = 24 Hrs
T2 = 2π/ω2
= 2π/8ω1
T2 = 24/8
T2 = 3 Hours
Thus the length of the day becomes 3 Hours.
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What is angular momentum?
https://brainly.in/question/6710222
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0
the answer is 3 hours
Explanation:
so this is the answer for this question
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