Equilibrium is when forces acting on an object are equal so their net force equals zero, by this I mean that opposite forces acting on an object are equal. Although equilibrium has a net force of 0 and acceleration of 0 but it doesn't mean that they are not moving an object at equilibrium is either at rest and staying at rest, or in motion and continuing in motion with the same speed and direction.
Static means unmoving or the act of being stationary. So that means that static equilibrium is when an objects net value is 0 and they don't move and stay stationary.
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| This models a baby on a board suspended by two adults like how a beam bridge suspends a car/truck . |
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