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what condition or conditions is are necessary for static equilibrium

by Sedrick O'Kon Published 3 years ago Updated 2 years ago

Two conditions of equilibrium must be satisfied to ensure that an object remains in static equilibrium. Firstly, the net force acting upon the object must be zero. Secondly, the net torque acting upon the object must also be zero.

What are the conditions for a body to be in Static Equilibrium? Two conditions of equilibrium must be satisfied to ensure that an object remains in static equilibrium. Firstly, the net force acting upon the object must be zero. Secondly, the net torque acting upon the object must also be zero.

Full Answer

What are four things function in static equilibrium?

Static equilibrium refers to the physical state in which a system’s components are at rest and the net force is zero through the system. Static equilibrium takes place when all the forces acting on an object are balanced and the object is not in motion in relation to the relative plane. An object which is in static equilibrium is unable to move.

What are the two conditions for equilibrium?

  • The lines of action are coplanar (in the same plane)
  • The lines of action are convergent (they cross at the same point)
  • The vector sum of these forces is equal to the zero vector.

What is a static equilibrium explain with an example?

Static Equilibrium

  • Definition and Meaning of Static Equilibrium. Static equilibrium refers to the physical state in which a system’s components are at rest and the net force is zero through the system.
  • A Balance of Forces. ...
  • Conditions and Equations for Static Equilibrium. ...
  • Solved Question For You. ...

What is the common factor on static and dynamic equilibrium?

equilibrium of stationary bodies under the action of forces. The other main branch – dynamics – deals with moving bodies, such as parts of machines. static equilibrium A planar structural system is in a state of static equilibrium when the resultant of all forces and all moments is equal to zero, i.e. y x ∑F x = 0 ∑F y = 0

What is the first condition for static equilibrium?

The first condition necessary to achieve equilibrium is the one already mentioned: the net external force on the system must be zero. Expressed as an equation, this is simply. net F=0. Note that if netF is zero, then the net external force in any direction is zero.

What are the conditions of static equilibrium quizlet?

Terms in this set (17) The sum of all torque must equal zero. Forces that would cause an object to move in a straight line. Any influence which causes an object to rotate. No torque if all forces act at one point.

What are the 3 condition of equilibrium?

A solid body submitted to three forces whose lines of action are not parallel is in equilibrium if the three following conditions apply : The lines of action are coplanar (in the same plane) The lines of action are convergent (they cross at the same point) The vector sum of these forces is equal to the zero vector.

Which of the following must be true for an object in static equilibrium?

Conditions for equilibrium require that the sum of all external forces acting on the body is zero (first condition of equilibrium), and the sum of all external torques from external forces is zero (second condition of equilibrium). These two conditions must be simultaneously satisfied in equilibrium.

What is static equilibrium in physics?

Static equilibrium is a state where bodies are at rest; dynamic equilibrium is a state where bodies are moving at a constant velocity (rectilinear motion). In both cases the sum of the forces acting on them is zero.

What are the conditions for a body to be in static and dynamic equilibrium?

For example a book lying on a table is in static equilibrium. ii When a body remains in the same state of motion translational or rotational under the influence of the applied forces the body is said to be in dynamic equilibrium.

What are conditions of static equilibrium for a rigid body?

For a rigid body to be in equilibrium, the net force as well as the net moment about any arbitrary point O must be equal to zero.

What are the conditions of static equilibrium for a system of coplanar parallel forces?

Coplanar, Non-Concurrent, Parallel Forces Three or more parallel forces are required. They will be in equilibrium if the sum of the forces equals zero and the sum of the moments around a point in the plane equals zero. Equilibrium is also indicated by two sums of moments equal to zero.

What are the conditions of equilibrium?

Conditions for equilibrium require that the sum of all external forces acting on the body is zero (first condition of equilibrium), and the sum of all external torques from external forces is zero (second condition of equilibrium). These two conditions must be simultaneously satisfied in equilibrium.

How to solve static equilibrium?

By the end of this section, you will be able to: 1 Identify the physical conditions of static equilibrium. 2 Draw a free-body diagram for a rigid body acted on by forces. 3 Explain how the conditions for equilibrium allow us to solve statics problems.

What is the second equilibrium condition?

The second equilibrium condition means that in equilibrium, there is no net external torque to cause rotation about any axis. The first and second equilibrium conditions are stated in a particular reference frame. The first condition involves only forces and is therefore independent of the origin of the reference frame.

When is a rigid body in equilibrium?

We say that a rigid body is in equilibrium when both its linear and angular acceleration are zero relative to an inertial frame of reference. This means that a body in equilibrium can be moving, but if so, its linear and angular velocities must be constant.

When solving static equilibrium problems, are we free to choose the pivot location?

This example shows that when solving static equilibrium problems, we are free to choose the pivot location. For different choices of the pivot point we have different sets of equilibrium conditions to solve. However, all choices lead to the same solution to the problem.

Is static equilibrium a relative or dynamic equilibrium?

Because the motion is relative, what is in static equilibrium to us is in dynamic equilibrium to the moving observer, and vice versa. Since the laws of physics are identical for all inertial reference frames, in an inertial frame of reference, there is no distinction between static equilibrium and equilibrium.

How to solve static equilibrium?

By the end of this section, you will be able to: 1 Identify the physical conditions of static equilibrium. 2 Draw a free-body diagram for a rigid body acted on by forces. 3 Explain how the conditions for equilibrium allow us to solve statics problems.

When solving static equilibrium problems, are we free to choose the pivot location?

This example shows that when solving static equilibrium problems, we are free to choose the pivot location. For different choices of the pivot point we have different sets of equilibrium conditions to solve. However, all choices lead to the same solution to the problem.

What is the second equilibrium condition?

The second equilibrium condition means that in equilibrium, there is no net external torque to cause rotation about any axis. The first and second equilibrium conditions are stated in a particular reference frame. The first condition involves only forces and is therefore independent of the origin of the reference frame.

When is a rigid body in equilibrium?

We say that a rigid body is in equilibrium when both its linear and angular acceleration are zero relative to an inertial frame of reference. This means that a body in equilibrium can be moving, but if so, its linear and angular velocities must be constant.

Is the knot that ties strings to the pan static equilibrium?

Specifically, the knot that ties the strings to the pan is in static equilibrium. The knot can be treated as a point; therefore, we need only the first equilibrium condition.

Is static equilibrium a relative or dynamic equilibrium?

Because the motion is relative, what is in static equilibrium to us is in dynamic equilibrium to the moving observer, and vice versa. Since the laws of physics are identical for all inertial reference frames, in an inertial frame of reference, there is no distinction between static equilibrium and equilibrium.

What are the conditions of equilibrium?

Conditions for equilibrium require that the sum of all external forces acting on the body is zero (first condition of equilibrium), and the sum of all external torques from external forces is zero (second condition of equilibrium). These two conditions must be simultaneously satisfied in equilibrium. If one of them is not satisfied, the body is not ...

What is the second equilibrium condition?

The second equilibrium condition means that in equilibrium, there is no net external torque to cause rotation about any axis. The first and second equilibrium conditions are stated in a particular reference frame. The first condition involves only forces and is therefore independent of the origin of the reference frame.

When is a rigid body in equilibrium?

We say that a rigid body is in equilibrium when both its linear and angular acceleration are zero relative to an inertial frame of reference. This means that a body in equilibrium can be moving, but if so, its linear and angular velocities must be constant.

Is static equilibrium a relative or dynamic equilibrium?

Because the motion is relative, what is in static equilibrium to us is in dynamic equilibrium to the moving observer, and vice versa. Since the laws of physics are identical for all inertial reference frames, in an inertial frame of reference, there is no distinction between static equilibrium and equilibrium.

What does Static Equilibrium mean?

The word equilibrium implies balance. In particular, static equilibrium suggests that a system is stable and at rest. However, to be completely balanced, the net torque must also be zero.

What are the conditions for a body to be in Static Equilibrium?

Two conditions of equilibrium must be satisfied to ensure that an object remains in static equilibrium. Firstly, the net force acting upon the object must be zero. Secondly, the net torque acting upon the object must also be zero. In other words, both static translational and static rotational equilibrium conditions must be satisfied.

Second Condition of Equilibrium

The second condition of equilibrium states that the net torque acting on the object must be zero.

Frequently Asked Questions – FAQs

To achieve complete static equilibrium, a system must possess both rotational equilibrium and translational equilibrium.

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