Question

what is the work done to moving a body of mass of 60kg to a distance of 5m .if coefficient of friction between body and the plane is 0.27​

Answer 1

Answer:

mass 60 kg to a distance of 5 meters, if the co- efficient if friction between body and the plane is. 0.2? A: 12 kg.

Answer 2

Answer:

If the coefficient of friction between a body and the plane is 0.27​, the work done to move a body of mass of 60kg to a distance of 5m will be $793.8 \ Nm$

Explanation:

• We know the work done to move a body is the product of the force applied to the object and the distance moved by the object. Let W be the work done, F be the force and x be the distance moved by the object.

        That is,

        $W = F\times x$     ...(1)

        Force can be obtained by using the expression,

        $F = \mu mg$        ...(2)

         Where

         $\mu$  - the coefficient of friction

         m - Mass of the object and

         g - the acceleration due to gravity.

• In the question, it is given that,

       $m = 60\ kg$           $\mu = 0.27$          $x = 5m$

       We know,

       $g = 9.8m/s^2$

       Substituting these values into equation (2),

      $F = 0.27\times 60\times 9.8 = 158.76 N$

      Then using equation(1),

      $W = 158.76\times 5 = 793.8 \ Nm$