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Related Concept Videos

Torque01:10

Torque

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Torque is an important quantity for describing the dynamics of a rotating rigid body. We see the application of torque in many ways in the world, such as when pressing the accelerator in a car, which causes the engine to apply additional torque on the drivetrain. Here, we define torque and provide a framework to create an equation to calculate torque for a rigid body with fixed-axis rotation.
Torque can be considered as the rotational counterpart to force. Since forces change the translational...
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When a mechanic tries to remove a hex nut with a wrench, it is easier if the force is applied at the farthest end of the wrench handle. The lever arm is the distance from the pivot point (the hex nut in this case) to the person’s hand. If this distance is large, the torque is higher. Only the component of the force perpendicular to the lever arm contributes to the torque. Therefore, pushing the wrench perpendicular to the lever arm is more advantageous. If multiple people apply force to...
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The torque-free motion refers to the movement of a rigid body in space when no external torques are acting upon it. This type of motion can be observed in environments where there are no external forces or frictions, like in outer space. For example, a rotation of Mars in space is a torque-free motion. Mars is an axisymmetric object, meaning it has an axis of symmetry along which it rotates, designated as the z-axis. The rotating frame of reference is defined such that the center of mass of...
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Multimachine stability analysis is crucial for understanding the dynamics and stability of power systems with multiple synchronous machines. The objective is to solve the swing equations for a network of M machines connected to an N-bus power system.
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The high speed of electrical signals results from the fact that the force between charges acts rapidly at a distance. Thus, when a free charge is forced into a wire, the incoming charge pushes other charges ahead due to the repulsive force between like charges. These moving charges move the charges farther down the line. The density of charge in a system cannot easily be increased, so the signal is passed on rapidly. The resulting electrical shock wave moves through the system at nearly the...
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Related Experiment Video

Updated: Apr 13, 2026

Author Spotlight: Enhancing Neurorehabilitation Through EEG, Motor Imagery, and Virtual Reality
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Trusting a Virtual Driver That Looks, Acts, and Thinks Like You.

Frank M F Verberne1, Jaap Ham2, Cees J H Midden2

  • 1Eindhoven University of Technology, Eindhoven, Netherlands frankverberne@gmail.com.

Human Factors
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Similarity increases trust in virtual agents. Participants trusted a similar virtual driver more than a dissimilar one, suggesting this could enhance acceptance of self-driving cars.

Keywords:
facial similaritylikingmimicryperceived similarityshared goalssimilaritytrustvirtual agent

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Area of Science:

  • Human-computer interaction
  • Psychology
  • Artificial intelligence

Background:

  • Trust is crucial for smart system acceptance.
  • Smart systems are often anthropomorphized.
  • Human-to-human similarity research suggests increased trust.

Purpose of the Study:

  • To investigate if similarity influences trust in virtual agents.
  • To compare trust in similar versus dissimilar virtual agents.
  • To explore the impact of experience on trust.

Main Methods:

  • Driving simulator experiment with 111 participants.
  • Virtual agent presented as a driver, either similar or dissimilar.
  • Measurement of trust before and after interaction, and perceived similarity.

Main Results:

  • Higher trust in the similar agent compared to the dissimilar agent, even before interaction.
  • Perceived similarity mediated the trust effect.
  • Sustained higher trust in the similar agent after experiencing it.

Conclusions:

  • Similarity significantly enhances trust in virtual agents, mirroring human-to-human interactions.
  • Virtual agents with human-like similarity can increase user trust.
  • This finding has implications for the adoption of autonomous vehicles, particularly self-driving cars.