Ent103. Block A of mass m rests on the plank B of mass3m which is free

1.	Ent103. Block A of mass m rests on the plank B of mass3m which is free to slide on a frictionless horizo-ntal surface. The coefficient of friction betweenthe block and plank is 0.2. If a horizontal forceof magnitude 2 mg is applied to the plank B,the acceleration of A relative to the plank andrelative to the ground respectively, are:A2mgis10lackt oflack
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Ent103. Block A of mass m rests on the plank B of mass3m which is free to slide on a frictionless horizo-ntal surface. The coefficient of friction betweenthe block and plank is 0.2. If a horizontal forceof magnitude 2 mg is applied to the plank B,the acceleration of A relative to the plank andrelative to the ground respectively, are:A2mgis10lackt oflack

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