wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

A rod OA of mass m and length L is rotating in a horizontal circle about point O as shown in figure. B is the mid-point of rod. If T represents tension in the rod at any point and Uo represents elastic strain energy stored in the rod OA, UB represents elastic strain energy stored in the rod (OB) then choose correct alternative (s).

A
To=43TB
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
To=2TB
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
Uo=1611UB
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D
Uo=4UB
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct options are
A To=43TB
C Uo=1611UB
At fixed end,
To=12mω2L
At x, from fixed end
T=12mω2L(L2x2)


At B,
TB=12mω2L(L2L24)TB=38mω2L

i.e., To=43TB
Again, T=12mω2L(L2x2)
Elastic strain energy
dU=12mω2L(L2x2)dx
U=12mω2LL0L2dxL0x2dx=12mω2L(xL2x33)
For OA,x=L
Uo=13mω2L2
and for OB,x=L2
UB=12mω2L(L32L324)=mω2L11L348
i.e., Uo=1611UB

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Conservative Forces and Potential Energy
PHYSICS
Watch in App
Join BYJU'S Learning Program
CrossIcon