Statics equilibrium?
3 Answers
Explanation:
Calling
the equilibrium equation is
or
solving for
Explanation:
Option (1)
Explanation:
Let
We see that the mass has moved a horizontal distance
and consequently it has moved through a vertical distance of
Due to movement in the vertical direction it has gained
Gravitational potential energy
Due to Law of conservation of energy this must be equal to work done by an effective Horizontal force
I have used effective as position of the force keeps on changing as the mass moves up.
Work done by the force
As shown in the fig above, angle between the two is
Equating (1) and (2) we get
Let
and
Inserting these values in (3) we get