What are the conditions for a body to be in equilibrium under the action of three forces?
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.
What are the two conditions for a body to be in equilibrium?
For a body to be in equilibrium: 1) The resultant of all the forces acting on the body should be equal to zero. 2) The resultant moment of all the forces acting on the body about the point of rotation should be zero.
When a body is in equilibrium under only two forces they must be?
Two force principle: If only two forces act on a body that is in equilibrium, then they must be equal in magnitude, co-linear and opposite in sense.
Under what conditions can a rotating body be in equilibrium give an example?
The net external force acting on the body is zero. The equilibrium condition is disturbed when an unbalanced external force acts on the system. For a body rotating about an axis, it is in equilibrium if it is at rest (not rotating) or it is rotating at a constant angular velocity about the axis.
What are the conditions for equilibrium of a rigid body state in words and equation form?
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.
What are the conditions under which a rigid body at rest remains in equilibrium when acted upon by three non parallel coplanar forces?
The conditions under which a rigid body remains in equilibrium when acted upon by three non-parallel coplanar forces are: The forces must be concurrent (i.e. they must meet at a point. The resultant of the forces must be equal to zero.
What are the conditions of equilibrium Mcq?
When a body is subjected to two forces, the body will be in equilibrium if the two forces are: collinear, equal and act in the same direction. collinear, unequal and opposite. non collinear, equal and opposite.
How many conditions of equilibrium are there?
There are two conditions of equilibrium, the first condition of equilibrium, and the second condition of equilibrium.
What is the condition of equilibrium?
The two conditions that are important for equilibrium:- The sum or resultant of all external forces acting on the body must be equal to zero. The sum or resultant of all external torques from external forces acting on the object must be zero.
What condition or conditions must be met for a rigid body to be in equilibrium?
What condition or conditions must be met for a rigid body to be in rotational equilibrium? Both the net force and net torque on the object must be zero. For an extended object (an object that is not just a point) that is moving, the total kinetic energy is given by….
What is the condition for equilibrium of a particle?
According to Newton’s first law, a particle is said to be in equilibrium if. there is no net force acting on it. This does not mean that no forces act on. the particle, but rather that the resultant of all the forces which do act on. the particle is zero.
What are the conditions of mechanical equilibrium of a rigid body?
Here are the two conditions for equilibrium and their respective equations. (1) The total or net force i.e. the vector sum of all the forces, on the rigid body is zero. (2) The total Torque i.e. the vector sum of the torques on the rigid body is zero.
What are the conditions for equilibrium in physics?
The conditions for equilibrium are like this, for two forces, they must be equal and opposite. For three, they must form a closed figure (often it’s a triangle, but it could be a line) when put head to tail. Generally stated, the vector sum of the forces must be zero.
What are the conditions for equilibrium of rigid bodies?
(B)conditions for equilibrium of rigid bodies under the action of parallel and non-parallel forces I.The algebraic sum of the forces acting on the body in any direction must be zero. In other words, the sum of upward forces must be equal to the sum of downward forces, and similarly for those forces along the other directions.
What are the three principles of equilibrium?
A few common principles equilibrium are: Two force principle: States that if two forces are in equilibrium they must be equal, opposite and collinear. Three force principle: States that if three forces are in equilibrium then resultant of any two forces must be equal, opposite and collinear with the third force.
How do you know if a body is in equilibrium?
A body will be in equilibrium,when the vector sum of all the forces is o. For three forces acting on a body,in equilibrium,we can use the lami’s theorem. It states that,A/sinA=B/sinB=C/sinC for the forces A B,C. Torque plays the same role of force in rotational motion.