What does static equallibrium mean in mechanics for an object which can move in a two dimensional space? Select all that apply. 1. The object is moving. 2. The object is not moving. 3. Assume that x and y directions are perpendicular to each other. The sum of all the forces on the object is zero in the x direction, but not in the y direction. 4. The sum of all the forces on the object is zero in the y direction, but not in the x direction. 5. The sum of all the forces on the object is zero in both the x and y directions, but not necessarily in all other directions.
What does static equallibrium mean in mechanics for an object which can move in a two dimensional space?
Select all that apply.
1. The object is moving.
2. The object is not moving.
3. Assume that x and y directions are perpendicular to each other. The sum of all the forces on the object is zero in the x direction, but not in the y direction.
4. The sum of all the forces on the object is zero in the y direction, but not in the x direction.
5. The sum of all the forces on the object is zero in both the x and y directions, but not necessarily in all other directions.
The dynamic equilibrium is a state of any object where object moves at a constant velocity.
Hence, option (1) is incorrect.
Static equilibrium:
In this type of equilibrium the algebraic sum of all the forces and moment about any point on the object should be equal to zero in any direction.
Therefore, option (3), (4), (5) are incorrect.
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