a JUICUIQUUn Or normal reaction Two...
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a JUICUIQUUn Or normal reaction Two blocks are in contact on a frictionless table. One has mass m and the other 2m. A force Fis applied on 2m as shown in the figure. Now the same force F is applied from the right on m. In the two cases respectively, the ratio of force of contact between the two blocks will be : F- 2m 2m m (A) same (B) 1:2 (D) 1:3 (C) 2:1

JEE/Engineering Exams
Physics
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case I ( a=frac{F}{3 a} ) ( N_{1}=m a ) ( quad=m times frac{F}{3 a}=frac{F}{3} ) case II ( begin{aligned} a=& frac{F}{3 a} N_{2} &=2 m times a &=2 m times frac{F}{3 a}=frac{2}{3} F frac{N_{1}}{N_{2}} &=frac{1}{2} end{aligned} ) Hence ( c ) is the correct answer.
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