Tension Forces and Block: Direction of Pulling?

  • Thread starter mybrohshi5
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In summary, tension acts in both directions on a string that is being pulled. It is equal in magnitude and opposite in direction to the pulling force. This is due to the principle that every action has an equal and opposite reaction. In other words, to the force pulling the string to the right, there is an equal force pulling the string to the left.
  • #1
mybrohshi5
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If i have a block (b) and attach a string and pull it to the right. in what direction will the tension be?

(b)------->me pulling to the right

is the tension of the string to the right cause that is the way i am pulling or is the tension in the string to the left because that is the direction the block is resisting the pull?thank you... just trying to understand tension for my exam tomorrow :biggrin:
 
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  • #2
To every action there is an equal and opposite reaction...
 
  • #3
So would the tension in the string be to the left then in the direction the block is resisting the force?

thanks :)
 
  • #4
Hi mybrohshi5! :smile:
mybrohshi5 said:
If i have a block (b) and attach a string and pull it to the right. in what direction will the tension be?

Tension acts both ways.

Imagine a tiny litle bit of the string … it's in equilibrium, so the total external forces on it are zero …

the only forces are its weight (usually negligible), and the pulling force at each end.

That force at each end is the tension, T … you can see it acts in both directions! :smile:

If you pull a string with a block on the other end, and the tension is T, then the force on you is T towards the block, and the force on the block is T towards you. :wink:
 
  • #5
there is tension in the string pointing towards the direction its pulling and in the opposite is usually static or kinetic friction, depends if the object is moving or not.
 

1. What are tension forces?

Tension forces are forces that occur when an object is being pulled on from both ends. They are also known as stretching forces, and they can occur in a variety of situations, such as when a rope is being pulled or when a spring is being stretched.

2. How are tension forces different from other types of forces?

Tension forces are different from other types of forces, such as gravitational or normal forces. While gravitational and normal forces act perpendicular to the surface of an object, tension forces act parallel to the surface of an object.

3. How does the direction of pulling affect tension forces?

The direction of pulling is important in determining the magnitude and direction of tension forces. When an object is being pulled in a straight line, the tension forces will act in the same direction as the force being applied. However, if the object is being pulled at an angle, the tension forces will act in a direction that is parallel to the angle of the pull.

4. Can tension forces change the shape of an object?

Yes, tension forces can change the shape of an object. When a force is applied to an object, the tension forces within the object will cause it to stretch or compress, depending on the direction of the force. This is why objects like springs and rubber bands can be stretched or compressed by applying tension forces to them.

5. How do engineers use tension forces in their designs?

Engineers often use tension forces in their designs to create structures that are strong and stable. For example, suspension bridges use tension forces to distribute the weight of the bridge evenly, allowing it to support heavy loads. Tension forces can also be used in construction to hold parts of a building together or to reinforce materials such as concrete.

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