Clockwise Moment Direction: 2D Problem RHR

In summary, for this two-dimensional problem, the moment turns in a clockwise direction as indicated by the arrow. The right-hand rule (RHR) can be used to determine the direction of the moment, with the force (F) and radius (r) being in the direction of your fingers and palm, respectively.
  • #1
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Homework Statement



Moment turns in clockwise direction, indicated with arrow. Two dimensional problem.

Homework Equations



RHR.

The Attempt at a Solution



Right hand rule.My issue is that I've been taught that the moment "goes out of the board" or "into the board", however this is a 2d problem. If I have a picture of the moment going in a clockwise direction flat on the page, how could I determine what direction my F and r are? Also, would this moment be in the x, y, or both?

http://www.learning.physics.dal.ca/dalphysicslib/Graphics/Gtype14/hibb5-21.gif
 
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  • #2
The moment would be in the x-y plane. You would use the right-hand rule to determine the direction of the moment. Point your thumb in the direction of the moment and your fingers in the direction of the force (F) and the radius (r) will be in the direction that your palm is facing.
 

1. What is the Clockwise Moment Direction?

The Clockwise Moment Direction refers to the direction in which a force will cause an object to rotate in a clockwise direction. It is based on the Right Hand Rule (RHR) in a two-dimensional (2D) problem, where the thumb represents the direction of the force, the fingers represent the direction of the moment, and the palm represents the direction of rotation.

2. How do you determine the Clockwise Moment Direction using the RHR?

To determine the Clockwise Moment Direction using the RHR, you must first align your thumb with the force acting on the object. Then, curl your fingers in the direction of rotation. The direction your fingers are pointing represents the Clockwise Moment Direction.

3. Why is it important to understand the Clockwise Moment Direction?

Understanding the Clockwise Moment Direction is important in physics and engineering because it allows us to predict the direction of rotation of an object, as well as the forces needed to cause a desired rotation. It is also crucial in designing and analyzing structures, such as bridges and buildings, to ensure they can withstand the forces and moments acting on them.

4. Can the Clockwise Moment Direction change?

Yes, the Clockwise Moment Direction can change depending on the direction of the force and the orientation of the object. If the force is reversed or the object is rotated, the Clockwise Moment Direction will also change. It is important to keep this in mind when analyzing forces and moments in a 2D problem.

5. How does the Clockwise Moment Direction relate to the concept of torque?

The Clockwise Moment Direction is closely related to the concept of torque, which is the measure of the force that causes an object to rotate. The direction of the torque is determined by the direction of the force and the Clockwise Moment Direction. The greater the force and the longer the distance from the axis of rotation, the greater the torque and the faster the object will rotate.

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