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Related Concept Videos

Normal and Tangetial Components: Problem Solving01:24

Normal and Tangetial Components: Problem Solving

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.
Work01:14

Work

Work is a fundamental concept of mechanical engineering and has many applications. Understanding how work is calculated and the different types of work can help us better understand physical processes and provide insights into complex problems.
Work is defined as the result of a force acting on an object, causing it to move along the line of action of force. It is also defined as the process of transferring energy through the application of force on an object, resulting in its displacement.
Work of a Couple Moment01:12

Work of a Couple Moment

Mechanical engineering involves the study of motion, energy, and force, and is concerned with designing, manufacturing, and maintaining mechanical systems. One important concept in this field is the couple moment, produced by two equal and opposite forces acting at two points in a rigid body separated by a certain distance.
When the rigid body undergoes a differential displacement due to a couple, its motion can be divided into two parts: equal translation of the two points to their final...
Factors Affecting Workability01:24

Factors Affecting Workability

The workability of concrete is a critical characteristic that influences the ease of mixing, handling, and finishing the concrete. It is affected by several factors including water content, aggregate properties, and admixtures like air entrainment. Water plays a fundamental role as it lubricates the concrete mix, facilitating easier movement and placement. However, the water requirement varies depending on the texture and shape of aggregates. Finer particles and angular, rough-textured...
Anatomical Positions01:11

Anatomical Positions

In anatomy, several standard anatomical positions are used as references for describing the position and orientation of different body parts. These positions help provide a common frame of reference when discussing anatomical structures. The anatomical position is the standard reference point for describing the body's position and orientation. In this position:
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The feet are parallel and flat on the floor.
The arms are hanging by the...
Accessory Structures of the Eye01:17

Accessory Structures of the Eye

Optical perception, or vision, is an extraordinary sense dependent on converting light signals received via the ocular organs. These organs, known as eyes, are securely positioned within the bony cavities of the skull, called orbits. The orbits serve a dual purpose: a protective shield for the ocular globes and a stable attachment point for the soft ocular tissues. The eye's external protective mechanisms include the eyelids, which are edged with lashes that act as a barrier against foreign...

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Related Experiment Videos

Ergonomics and sitting at work.

E N Corlett1

  • 1University of Nottingham, Institution for Occupational Ergonomics, University Park, Nottingham NG7 2RD, UK. beencor12@yahoo.co.uk

Work (Reading, Mass.)
|December 29, 2009
PubMed
Summary
This summary is machine-generated.

Workplace performance is heavily influenced by equipment interface. This study presents an improved seat design with enhanced adjustability to reduce discomfort and injury for seated workers.

Related Experiment Videos

Area of Science:

  • Ergonomics
  • Occupational Health
  • Human Factors Engineering

Background:

  • Workplace performance is influenced by various factors, with the user-equipment interface being critical.
  • Seating and workstation arrangements significantly impact worker comfort and productivity.
  • Existing conventional seat designs often lack the necessary adjustability for diverse user needs.

Purpose of the Study:

  • To describe factors causing discomfort and injury in seated workers.
  • To present a novel seat design based on spinal behavior under load.
  • To address the need for increased adjustability in seating for varied occupational and educational settings.

Main Methods:

  • Analysis of factors contributing to discomfort and injury in seated workers.
  • Development of a new seat design informed by biomechanical principles of the spine.
  • Evaluation of the new seat design through industrial and educational applications.

Main Results:

  • Identification of key factors leading to discomfort and injury among seated workers.
  • Introduction of a seat design with superior adjustability compared to conventional models.
  • Successful application of the innovative seat design in industrial and school environments.

Conclusions:

  • Optimized seat and workstation design is crucial for enhancing workplace performance.
  • The presented seat design offers improved adjustability to mitigate discomfort and prevent injuries.
  • The findings support the broader implementation of ergonomically advanced seating solutions across various settings.