If you are getting to know about the direction of the moment caused by...
The curled hand represents various thing. The direction of the moment axis is given by the thumb. The direction of the force is given by the fingers. As we place the fingers on the force and curl towards the rotational direction of the body about the axis.
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If you are getting to know about the direction of the moment caused by...
Explanation:
The technique of using your wrist and curling it in the direction of the rotation to determine the direction of the moment caused by the force applied on a body is known as the right-hand rule. It is a simple method to understand the direction of the moment vector in three-dimensional space.
The following points explain the right-hand rule:
Thumb represents the direction of the force: When a force is applied on a body, the direction of the force can be represented by the direction of your thumb. For example, if you apply a force on a body towards the right, then the direction of your thumb will be towards the right.
Fingers represent the direction of the force: The direction of the force can also be represented by the direction of your fingers. When you curl your fingers in the direction of the force, then the direction of your thumb will point in the direction of the moment vector.
The direction of the moment vector: The direction of the moment vector can be determined by using the right-hand rule. The direction in which you curl your wrist is towards the direction of the distance from the point of contact of force to the axis of rotation. The direction of the moment vector is perpendicular to the plane formed by the force vector and the distance vector.
The thumb represents the direction of the moment: Option (B) is not correct because the thumb represents the direction of the force, not the direction of the moment. The direction of the moment can be determined by using the right-hand rule, but the thumb represents the direction of the force vector.
Conclusion:
In conclusion, the right-hand rule is a simple technique to understand the direction of the moment vector. It involves using your wrist and curling it in the direction of the rotation to determine the direction of the moment vector. The thumb represents the direction of the force, and the fingers represent the direction of the force. The direction of the moment vector is perpendicular to the plane formed by the force vector and the distance vector.
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