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Most Important Selected Qs for JEE AdvancedPhysicsOscillations

A cyclist turns her bicycle upside down to tinker with it. After she gets it upside down, notices the front wheel executing a small-amplitude, back-and-forth rotational motion with a period of 12 s . Considering the wheel to be a thin ring of total mass 800 g and radius 20 cm , whose only irregularity is the presence of the small tyre valve stem, determine the mass of the valve stem (in gm). [Take : ^2= g and appropr

Correct answer

5

Step-by-step solution

= mgR =- I d ^2 dt ^2 ; d ^2 dt ^2 =- mgR MR ^2 T =2 MR mg solving for m we get m =5 gm .

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