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A body in equilibrium
- a)has zero resultant of all internal forces but not of external ones
- b)has external forces balanced by internal forces
- c)has two equal forces acting in opposite directions
- d)has zero resultant of all the external forces acting on it
Correct answer is option 'D'. Can you explain this answer?
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Verified Answer
A body in equilibriuma)has zero resultant of all internal forces but n...
A body is said to be in equilibrium only when the net resultant of all external forces applied on the body becomes zero. It does not depend upon any of the internal forces because for any system internal forces exist in pairs because of Newton's third law and hence they result in null.
Most Upvoted Answer
A body in equilibriuma)has zero resultant of all internal forces but n...
A body in equilibrium refers to a state in which the body is not undergoing any acceleration or rotation. In other words, the body is at rest or moving with a constant velocity. To achieve equilibrium, the net force acting on the body must be zero.
External and Internal Forces:
- External forces are those that are applied to the body from the outside. These forces can include gravitational force, contact forces, or any other forces that act on the body due to its interaction with the environment.
- Internal forces, on the other hand, are forces that are generated within the body itself. These forces can be the result of interactions between different parts of the body, such as tension in a string or compression in a solid object.
Zero Resultant of External Forces:
When a body is in equilibrium, the net force of all the external forces acting on it is zero. This means that the external forces are balanced and cancel each other out. In other words, the vector sum of all the external forces is zero.
Explanation of the Correct Answer:
The correct answer is option 'D', which states that a body in equilibrium has a zero resultant of all the external forces acting on it. This means that the external forces are balanced and cancel each other out, resulting in no net force acting on the body.
When the external forces on a body are balanced, it implies that the body is not experiencing any acceleration or change in its state of motion. This is because the balanced external forces are equal in magnitude and opposite in direction, resulting in a zero net force.
Internal Forces in Equilibrium:
While the resultant of external forces acting on a body in equilibrium is zero, it does not necessarily mean that the resultant of all the internal forces is zero. Internal forces can still exist within the body, but their vector sum does not contribute to the net force on the body.
Summary:
In summary, a body in equilibrium has a zero resultant of all the external forces acting on it. This means that the external forces are balanced and cancel each other out, resulting in no net force on the body. The internal forces may still exist within the body, but they do not contribute to the net force on the body in equilibrium.
External and Internal Forces:
- External forces are those that are applied to the body from the outside. These forces can include gravitational force, contact forces, or any other forces that act on the body due to its interaction with the environment.
- Internal forces, on the other hand, are forces that are generated within the body itself. These forces can be the result of interactions between different parts of the body, such as tension in a string or compression in a solid object.
Zero Resultant of External Forces:
When a body is in equilibrium, the net force of all the external forces acting on it is zero. This means that the external forces are balanced and cancel each other out. In other words, the vector sum of all the external forces is zero.
Explanation of the Correct Answer:
The correct answer is option 'D', which states that a body in equilibrium has a zero resultant of all the external forces acting on it. This means that the external forces are balanced and cancel each other out, resulting in no net force acting on the body.
When the external forces on a body are balanced, it implies that the body is not experiencing any acceleration or change in its state of motion. This is because the balanced external forces are equal in magnitude and opposite in direction, resulting in a zero net force.
Internal Forces in Equilibrium:
While the resultant of external forces acting on a body in equilibrium is zero, it does not necessarily mean that the resultant of all the internal forces is zero. Internal forces can still exist within the body, but their vector sum does not contribute to the net force on the body.
Summary:
In summary, a body in equilibrium has a zero resultant of all the external forces acting on it. This means that the external forces are balanced and cancel each other out, resulting in no net force on the body. The internal forces may still exist within the body, but they do not contribute to the net force on the body in equilibrium.
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A body in equilibriuma)has zero resultant of all internal forces but not of external onesb)has external forces balanced by internal forcesc)has two equal forces acting in opposite directionsd)has zero resultant of all the external forces acting on itCorrect answer is option 'D'. Can you explain this answer?
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