What Causes T2 and T3 to Have No Torque in This Picture?

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In summary, torque is a measure of rotational force calculated by multiplying the applied force by the distance from the axis of rotation. There are two main types, static and dynamic, as well as other types such as self-torque and external torque. Torque affects the rate and stability of rotational motion, and is influenced by factors such as magnitude, direction, point of application, distance, and object mass and shape. It has various applications in real-world, from powering vehicles to construction and sports.
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MG5
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In this picture...

12-p-025.gif


Why do T2 and T3 not produce any torque? Something to do with it being in equilibrium? Thanks.
 
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  • #2
What point are you taking moments about?
 
  • #3
Torque in this example has no meaning unless you reference it to a point or axis. T2 and T3 have no torque about the left end, but there may be plenty of torque abot some other point. Although this system is in equilibrium where the sum of torques about any point must sum to 0, the concept of torque about a point applies even for systems that are not in equilibrium.
 

1. What is torque and how is it measured?

Torque is a measure of the force that causes an object to rotate around an axis. It is calculated by multiplying the force applied to an object by the distance from the axis of rotation. The unit for torque is Newton-meters (N-m).

2. What are the different types of torque?

The two main types of torque are static torque and dynamic torque. Static torque is the force applied to an object that is not in motion, while dynamic torque is the force applied to an object that is in motion. Other types of torque include self-torque, which is the torque generated by a rotating object, and external torque, which is the torque applied to an object by an external force.

3. How does torque affect rotational motion?

Torque plays a crucial role in rotational motion as it determines the rate at which an object rotates around an axis. The greater the torque applied, the faster the object will rotate. Additionally, torque also affects the stability of an object's rotational motion. A higher torque will make an object more stable and less prone to changes in its rotational motion.

4. What factors affect torque?

The factors that affect torque include the magnitude, direction, and point of application of the force applied to an object. The distance between the axis of rotation and the point of application of the force also affects torque, with a longer distance resulting in a higher torque. Additionally, the mass and shape of an object can also affect its torque.

5. How is torque used in real-world applications?

Torque has many practical applications, including in the design and operation of machines and vehicles. It is used in engines to generate the rotational motion needed to power vehicles. Torque is also important in construction and engineering, as it is used to tighten bolts and screws to the appropriate level. In sports, torque is used to enhance performance, such as in swinging a baseball bat or golf club.

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