Most Important Selected Qs for JEE AdvancedPhysicsOscillations
Paragraph: The time-period of a simple pendulum performing simple harmonic motion, having length is given T =2 ~g This formula holds good if following conditions are satisfied. (i) String is massless and extensible. (ii) Bob is a point mass. (iii) Angular displacement about mean position is very small, and (iv) Length of string is very small as compared to the radius of earth ( R _ e ) . Question: If the bob is a sol
Options
- A2 5 R ^2 ( ~L + R ) +( R + L )
- B2 5 R ^2 ~L + L
- CR + L
- DL
Correct answer
A. 2 5 R ^2 ( ~L + R ) +( R + L )
Step-by-step solution
R = radius of gyration about mass centre = 2 R 5 = distance between point of suspension and mass centre = L + R _ eq = k ^2 + = 2 5 R ^2 ( ~L + R ) +( L + R )