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please explain sir …..... as soon as possible.........

please explain sir ….....
as soon as possible.........
 

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Grade:12

2 Answers

Ayush_Deep
120 Points
3 years ago
The correct answer will be option A. 
First find moment of inertia about hinge point I= 3ml²/2
Now rotate the frame by angle ¢ . then the torque applied by spring K2 will be k2 *¢ * (L/√3)²
Torque by k1 = k1 *¢*(√3L/2)²
Net torque is calculated by adding both torque and is equal to iw²¢
By this you can calculate W and thus w/2π is frequency.
Vikas TU
14149 Points
3 years ago
Dear student 
rotate the frame by angle ¢ . then the torque applied by spring K2 will be k2 *¢ * (L/√3)²
Torque by k1 = k1 *¢*(√3L/2)²
Net torque is calculated by adding both torque and is equal to iw²¢
By this you can calculate W and thus w/2π is frequency

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