CBSE Class 11-science Answered
Q. What will be the duration of the day, if the earth suddenly shrinks to 1/64th of its original volume and mass remaining unchanged ?
Asked by Vipul Kaushik | 19 Oct, 2010, 12:52: PM
Expert Answer
Dear Student
Since there is no external torque, angular momentum will remain unchanged.
r = R/4 (v = V/64)
D, d => duration of the day.
Initial angular momentum = (2/5 MR2) x (2π / D)
Hence
(4/5) x πMR2 / D = (4/5) x π M (R2/16)/d
1/D = 1/16d
d = D/16=24/16=1.5 hours.
r = R/4 (v = V/64)
D, d => duration of the day.
Initial angular momentum = (2/5 MR2) x (2π / D)
Hence
(4/5) x πMR2 / D = (4/5) x π M (R2/16)/d
1/D = 1/16d
d = D/16=24/16=1.5 hours.
We hope that satisfies your query.
Regards
Team
TopperLearning
Answered by | 20 Oct, 2010, 04:40: PM
Concept Videos
-
Potential Energy
This video explains the gravitational potential energy and finding out the ... -
Gravitation
This video explains the universal law of gravitation and the acceleration d... -
Gravitation
This video explains the universal law of gravitation and the gravitational ... -
Gravitation
This video explains Kepler's law of orbits. -
Work, Energy and Power
This video explains the derivation of the principle of conservation of tota...
CBSE 11-science - Physics
Asked by corggn16 | 11 Feb, 2024, 01:22: PM
ANSWERED BY EXPERTCBSE 11-science - Physics
Asked by varma.renu9481 | 17 Mar, 2023, 06:26: PM
ANSWERED BY EXPERTCBSE 11-science - Physics
Asked by rajkumaeghogre975 | 10 Jan, 2023, 07:36: PM
ANSWERED BY EXPERTCBSE 11-science - Physics
Asked by shivanipanchal6883 | 05 Jan, 2023, 02:44: PM
ANSWERED BY EXPERTCBSE 11-science - Physics
Asked by ubarhandepramod | 21 Nov, 2022, 03:49: PM
ANSWERED BY EXPERTCBSE 11-science - Physics
Asked by ankurgoyal616 | 27 Sep, 2022, 03:07: PM
ANSWERED BY EXPERTCBSE 11-science - Physics
Asked by halderishan008 | 30 Jul, 2022, 07:28: PM
ANSWERED BY EXPERTCBSE 11-science - Physics
Asked by dibjotsingh770 | 04 Jul, 2022, 10:40: PM
ANSWERED BY EXPERTCBSE 11-science - Physics
Asked by shmaahtabrez18 | 02 Sep, 2021, 12:23: PM
ANSWERED BY EXPERTCBSE 11-science - Physics
Asked by Mp881337 | 06 Aug, 2021, 04:41: PM
ANSWERED BY EXPERT
