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Related Concept Videos

Normal and Tangetial Components: Problem Solving01:24

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Consider a man with a mass of 70 kg seated in a chair connected to a pin support through a member BC. If the man maintains an upright position, the task is to determine the horizontal and vertical reactions of the chair on the man when the member makes a 45° angle with the horizontal. At this moment, the man has a speed of 5 m/s, increasing at a rate of 1 m/s².
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Consider an arbitrary truss structure composed of diagonal, vertical, and horizontal members fixed to the wall. To calculate the force acting on members CB, GB, and GH, method of sections can be used. The loads and lengths of the horizontal and vertical members are known parameters, as shown in the figure.
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Friction: Problem Solving01:21

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Friction is an essential force that influences the motion of objects in daily life. Depending on the situation, it can be either beneficial or problematic. Consider a bus with a mass of three megagrams and its center of mass at a specific point, moving along a banked road at a constant speed. The coefficient of static friction between the tires and the road is 0.5. Find the maximum angle of the banked road at which the bus would not slip or tip.
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Related Experiment Videos

[On suggestion and its related problems].

Kazutaro Oka1

  • 1Momijigaoka Hospital.

Seishin Shinkeigaku Zasshi = Psychiatria Et Neurologia Japonica
|November 16, 2013
PubMed
Summary

This study re-examines suggestion, contrasting Sigmund Freud's view with Pierre Janet's concept of spontaneous intersubjectivity. It explores suggestion's link to fragile selfhood and its implications for hysteria, depersonalization, and schizophrenia.

Area of Science:

  • Psychology
  • Psychiatry

Context:

  • Recent discussions on dissociative disorders have revived interest in Pierre Janet's psychology.
  • Psychiatry has largely overlooked Janet's work on suggestion.
  • Freud's psychoanalysis has overshadowed Janet's contributions.

Purpose:

  • To examine suggestion from a non-psychodynamic perspective, contrasting Freud's and Janet's theories.
  • To explore Janet's concept of suggestion as a spontaneous intersubjective process.
  • To investigate the relationship between suggestion, hysteria, depersonalization, and schizophrenia.

Summary:

  • Freud viewed suggestion as a subject-object dynamic, a perspective shared by precursors like Mesmer.
  • Janet, influenced by de Biran and Bergson, saw suggestion rooted in a middle-voice, intersubjective process.

Related Experiment Videos

  • This perspective highlights fragile selfhood and its connection to mental phenomena like hysteria.

    • Impact:

    • Challenges Freud's topographical model of the unconscious by suggesting superficial localization.
    • Offers a new framework for understanding dissociative disorders and related conditions.
    • Reintegrates Janet's influential ideas into contemporary psychiatric discourse.