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Most Important Selected Qs for JEE AdvancedPhysicsCenter of Mass, Momentum and Collision

A mass m is attached to one end of a light rod. This assembly is placed on the origin as shown in the figure. If all surfaces are smooth then the position of lower end when the rod becomes horizontal after its upper end has been disturbed gently towards right is

Options

  1. A, 0
  2. B2 , 0
  3. C- , 0
  4. D- 2 , 0

Correct answer

C. - , 0

Step-by-step solution

As there does not exist any external horizontal force so X - coordinate of centre of mass will not charge position of lower end is (- , 0)

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