Block A of mass m rests on the plank B of mass 3m which is free to slide on a…
Physics · JEE Advanced · NTA Exams — Laws of Motion
Block A of mass m rests on the plank B of mass 3m which is free to slide on a frictionless horizontal surface. The coefficient of friction between the block and plank is 0.2 . If a horizontal force of magnitude 2 mg is applied to the plank B, the acceleration of A relative to the plank and relative to the ground respectively, are:
- \(0, \frac{g}{2}\)
- \(0, \frac{2 g}{3}\)
- \(\frac{3 g}{5}, \frac{g}{5}\)
- \(\frac{g}{5}, \frac{2 g}{5}\)
Answer
(D) g 5 , 2 g 5
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