the addition of which of the following substances will not affect the existing equilibrium in an hf solution?
HCl
KCl
KF
NaOH

Respuesta :

The largest value of w (in N)that they can support as shown in equilibrium..

What is equilibrium?

a State of balance between opposing forces or actions that is either static as in nobody acted on by forces whose resultant is zero or dynamic reaction when the rates of reaction in both differentions are equal.

Sol- the total force in x direction is given as,

€Fx=0

T1 sin 37°=T2 sin 53°

100×3/5 =T/2 ×4/5

T2=75 N

The given total force is-

€Fy=0

T1 cos 37°=T2 cos 53°+W

W=80×4/5 -75×3/5

W=19N

Thus

The largest value of W is 19N.

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