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JEE Mains · Physics · STD 11 - 6. system of particles and rotational motion

ગોળીય કવચને ગબડવા માટે ચાકગતિ ઊર્જા અને કુલગતિ ઊર્જાનો ગુણોત્તર \(\frac{x}{5}\) છે. \(x\) નું મૂલ્ય ......... છે.

  1. A \(4\)
  2. B \(6\)
  3. C \(8\)
  4. D \(2\)
Verified Solution

Answer & Solution

Correct Answer

(D) \(2\)

Step-by-step Solution

Detailed explanation

\(\frac{ K _{\text {rot }}}{ K _{\text {Total }}}=\frac{\frac{1}{2}\left(\frac{2}{3} mR ^2\right)\left(\frac{ V }{ R }\right)^2}{\frac{1}{2} mv ^2+\frac{1}{2}\left(\frac{2}{3} mR ^2\right)\left(\frac{ V }{ R }\right)^2}\) \(\Rightarrow \frac{ x }{5}=\frac{2}{5} \Rightarrow x =2\)
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