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D. O 145.451 NE. 89.649 N11. An object of mass 3.123 kg is being pulled by ahorizontal force of 210 N on a horizontal force.The coefficient of kinetic friction betweenthe object and the surface is 0.1. Calculate theacceleration of the object. (1 point)A. O 30.373 m/s ²B. O 66.263 m/s²C. O 122.405 m/s²110.843 m/s2D.E.88.439 m/s²

D. O 145.451 NE. 89.649 N11. An object of mass 3.123 kg is being pulled by ahorizontal-example-1

1 Answer

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Given:

The mass of the object is,


m=3.123\text{ kg}

The object is being pulled by the force,


F=210\text{ N}

The coefficient of kinetic friction between the object and the surface is


\mu=0.1

To find:

The acceleration of the object

Step-by-step explanation:

The frictional force on the object is,


\begin{gathered} f=\mu mg \\ =0.1*3.123*9.8 \\ =3.06\text{ N} \end{gathered}

The resultant force on the object is,


\begin{gathered} F_(net)=F-f \\ =210-3.06 \\ =206.94\text{ N} \end{gathered}

The acceleration of the object is,


\begin{gathered} a=(F_(net))/(m) \\ =(206.94)/(3.123) \\ =66.263\text{ m/s}^2 \end{gathered}

Hence, the acceleration of the object is,


66.263\text{ m/s}^2

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