Questions
If the Earth shrinks such that its density becomes 8 times to the present value, then the new duration of the day in hours will be
detailed solution
Correct option is C
R1R23=d2d1=8; I1ω1=I2ω225MR122πT1=25MR222πT2T2T1=R2R12 T224=122 T2=6 hrsTalk to our academic expert!
Similar Questions
A disc rotates freely with rotational kinetic energy E about a normal axis through centre. A ring having the same radius but double the mass of disc is now, gently placed on the disc. The new rotational kinetic energy of the system would be
799 666 8865
support@infinitylearn.com
6th Floor, NCC Building, Durgamma Cheruvu Road, Vittal Rao Nagar, HITEC City, Hyderabad, Telangana 500081.
free study material
JEE Mock Tests
JEE study guide
JEE Revision Notes
JEE Important Questions
JEE Sample Papers
JEE Previous Year's Papers
NEET previous year’s papers
NEET important questions
NEET sample papers
NEET revision notes
NEET study guide
NEET mock tests
