1.

block(3) TU N35. Acceleration of block A varies with time as shown in figurethe value of coefficient of kinetic friction betweenA and B is5 m/s4.9 m/s30°ns)10 Sthe value of coefficient of kinetic friction between block A and B is(2) 06(4) of these(3) 0.4

Answer»

mass A will move only due to the frictional force acting on it... amd the value will be μmg

acceleration A , when after Time = 10sec

M.a = μMg

=> a = μg => 4.9 = μ*(9.8)=> μ = 4.9/9.8 = 0.5

option 1



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