Q. A block of mass m = 1/3 kg is kept on a rough horizontal plane. Friction coefficient is μ = 0.75. The work done by minimum force required to drag the block along the plane by a distance 5 m, is W joule, then find the value of W.  

Dear Student ,

The minimum force required to pull the object upwards is ,

So here the work done will be ,
W = Fs cosθ
Here the given values are , s=5 m ,μ=0.75 and m=13kgbut the value of inclination that is θ is not given .So kindly put the value of θ in the equation and get the result .


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