CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon
MyQuestionIcon
0
You visited us 0 times! Enjoying our articles? Unlock Full Access!
Question

Density remaining constant, if earth contracts to half of its present radius, duration of the day would be (in minutes):

A
360
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
80
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
100
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
120
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is A 360
Now if density remains same, new moment of inertia will be I=I4
And according to law of conservation of angular momentum (Iω)=(Iω)
ω=4ω
Also, ω=2πT and ω=2πT
T=T4
T=24hrs
T=244
T=6hrs=360minutes
Hence a day would be one-fourth of current duration



flag
Suggest Corrections
thumbs-up
1
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
LC Oscillator
PHYSICS
Watch in App
Join BYJU'S Learning Program
CrossIcon