A horizontal force is applied on a body on a rough horizontal surface produces an acceleration ‘a’. If coefficient of friction between the body and surface which is mu is reduced to mu//3, the acceleration increases by 2 units. The value of 'mu'is

A horizontal force is applied on a body on a rough horizontal surface

1.	A horizontal force is applied on a body on a rough horizontal surface produces an acceleration ‘a’. If coefficient of friction between the body and surface which is mu is reduced to mu//3, the acceleration increases by 2 units. The value of 'mu'is
Answer» 2/3g 3/2g 3/g 1/g Solution :`F_(R)=F-f, f=mu_(K)MG`