Alok and his father are sitting at a distance of 5 meter on a seesaw. His father is at the distance of 2 meter from the fulcrum and Slok weighs 20 kg. If they are balancing the seesaw, find the weight of his father.

30kg

Explanation:

Distance between Alok and father = 5m

Father's distance from fulcrum  = 2m

Solak's weight  = 20kg

Unknown:

Weight of the father = ?

Solution:

This problem entail the balancing of forces around a fulcrum.

    In this problem;

        workdone by father   =  workdone by Alok

            ( mass x distance) father  = (mass x distance) Alok

   distance of Alok from the fulcrum  = 3m

 Input the parameters and solve;

           mass of father x 2  = 20 x 3

            mass of father  = 30kg

The weight of the father is 30kg

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