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Most Important Selected Qs for JEE AdvancedPhysicsLaws of Motion

System is shown in figure. Assume the cylinder remains in contact with the two wedges. The velocity of cylinder is

Options

  1. A19-4 3 u 2 ~m / s
  2. B13 2 vm / s
  3. C3 v m / s
  4. D7 um / s

Correct answer

D. 7 um / s

Step-by-step solution

Let V_x and V_y be components of velocity. At contact point A and B , the velocity along normal should be same. u 60^ =V_y 30^ -V_x 60^ (1) aligned & v_ x =2 u & v = V _ x ^2+V_ y ^2 aligned

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