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Physics-

General

Easy

Question

Two blocks of Nass $8 text end text k g$ and $4 text end text k g$ ane connected a heavy string placed on rough horizontal plane, the 4 kg block is Pulled with a constant force F. The co-efficient of friction between the blocks and the ground is $0.5$ , what is the value of F, So that the tension in the spring is constant throughout during the motion of the blocks? $open parentheses g equals 10 text end text m s to the power of negative 2 end exponent close parentheses$

40 N
60 N
50 N
30 N

The correct answer is: 60 N

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