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The girl has a mass of 40 kg and center of mass at G. If

Engineering Mechanics: Statics & Dynamics | 14th Edition | ISBN: 9780133951929 | Authors: Russell C. Hibbeler ISBN: 9780133951929 123

Solution for problem 14-66 Chapter 14

Engineering Mechanics: Statics & Dynamics | 14th Edition

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Engineering Mechanics: Statics & Dynamics | 14th Edition | ISBN: 9780133951929 | Authors: Russell C. Hibbeler

Engineering Mechanics: Statics & Dynamics | 14th Edition

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Problem 14-66

The girl has a mass of 40 kg and center of mass at G. If she is swinging to a maximum height defined by u = 60, determine the force developed along each of the four supporting posts such as AB at the instant u = 0. The swing is centrally located between the posts.

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PSY 101 Study Guide 3 DEVELOPMENTAL PSYCH Mary Ainsworth ­ Researcher o​ ttachment Development Piaget ­ Researcher ​fognitive Development Erikson ­ Researcher o​ersonality Development Marcia ­ Researcher oIdentity Development Kubler­Ross ­ Researcher oStages of Grief Kohlberg ­ Researcher o​oral Development Research methods in developmental (2) ­ 1. Prenatal development 2. Infant development Prenatal development ­ the development of the zygote to birth. (0­birth) 1. Germinal Stage: 0­2 weeks ­ Zygote 2. Embryonic Stage: 2­8 weeks ­ Embryo 3. Fetal Stage: 8­birth ­ Fetus ­Teratogens and examples Importance of contact/touch ­ An Increase 50% survival Infant attachment styles (3) ­ 1. Secure: a. Most trust b. Adventurous c. Cry if caretaker leave 2. Anxious­ambivalent: a. Over dependence b. A little longer to play c. Harder to be comforted 3. Avoidant: a. Most distrust b. over­independence c. play fastest d. Don’t look around if caretaker leave US vs Germany vs Japan infant attachments Infant temperament styles (3) 1. Secure 2. Fear 3. Defensiveness Dendritic spread & pruning in infant brain “Planet Opposite” study Cognitive development stages (4) 1. Sensorimotor stage ­ (0­2 yr.) a. object permanence ­ when the object is out of sight, it is gone b. scale error ­ cannot tell the difference in size. 2. Preoperational stage ­ (2­7 yr.) a. Irreversibility ­ concentrate one thing at a time b. Egocentrism ­ see thing from oneself point­of­view 3. Concrete operations stage ­ (7­11 yr.) a. Conservation ­ the ability to see that distribution is different and size does not change b. Hierarchical classification 4. Formal operations stage ­ (11­adolescence) a. Abstract thinking b. Systematic thinking and logic Psychosocial development stages (8) 1. Trust vs Mistrust (1st year) 2. Autonomy vs Shame/Doubt (2­3 yr.) a. “Can I do it by myself” 3. Initiative vs Guilt (4­6 yr.) a. “Am I good or bad” 4. Industry vs Inferiority (6­puberty) a. “Am I a competent or worthless” 5. Identity vs Confusion (adolescence) a. “Who am I” 6. Intimacy vs Isolation (early adult) a. “Am I capable of meaningful relationship” 7. Generativity vs Self Absorption (mid adult) a. “Will I produce something valuable” 8. Integrity vs Despair (late adult) a. “Have I live a full life” Identity development statuses (4) 1. Identity Diffusion ­ No crisis or commitment 2. Identity Moratorium ­ No crisis, but have commitment 3. Identity foreclosure ­ Have crisis, but no commitment 4. Identity Achievement ­ Have crisis and commitment Moral development, 3 levels, 6 orientations 1. Preconventional Level a. Punishment orientation ­ Determination through ​ the thought of punishments b. Naïve reward orientation ­ Determination through ​ rewards 2. Conventional Level a. Good boy/girl orientation ­ Determination through ​approval b. Authority orientation ­ Determination through ​society’s rule 3. Postconventional Level a. Social Contract orientation ­ Determination through ​justice b. Individual principles & conscience orientation ­ Determination through ​abstract principles equity and justice Age conscience development begins ­ about age 9 Highlights of adolescence ­ ● Identity Crisis ● Stress ● Suicide attempts Adolescent brain structure & emotion Highlights of early adulthood ­ ● Marriage is now in late 20s­early 30s ● Increase in alternative lifestyles ● Four parenting styles ● These style will correlates with children Highlights of middle adulthood ● Marital happiness ○ Kids = happiness ■ Men = Yes ■ Women = No ● Midlife crisis vs reflection ● Empty nest syndrome vs adjustment Highlights of later adulthood ● Active neurons ○ Minor decline ● Sensory sensitivity ○ Gradual decline ­ easily corrected ● Fluid intelligence; Crystallized intelligence ○ Decrease fluid ○ Flexibility increase ● Life satisfaction ● Interaction of physical, cognitive, and social health Parenting styles (4) 1. Authoritarian ­ Excessive control, not responsive 2. Indulgent­permissive ­ little control, high responsive 3. Indifferent­uninvolved ­ no control, not responsive 4. Authoritative ­ high control, high responsive ­Island of Okinawa Stages of grieving & dying 1. Denial 2. Anger 3. Bargaining 4. Depression 5. Acceptance Two more stages added later 1. Shock ­ testing 2. Sticking , cycling ­ stuck at one phase or goes through phases, but repeat prior stage. Progression PERSONALITY PSYCH Freud ­ Study inPsychanalytic Theory Jung ­ Study inAnalytic psychology Adler ­ Study iIndividual psychology Skinner ­ Study iOperant Conditioning ​ by rewards and punishment Bandura ­ Study in​ocial Learning Theory ​by observations Rogers ­ Study inPerson­Centered Theory Maslow ­ Study in Self Actualization Theory Eyscenk ­ Study in​NP Theory Sam Gosling ­ Study in​ocial Perception and Cross­Species Personality ­ Durable and pervasive way of life Trait ­ A way of describing a being Personality or social situation MMPI ­ clinical usage 16 PF Questionnaire ­ personality factor usage The NEO Personality Inventory ­ normal life usage Rorschach test ­ looking for recurring themes The TAT ● For small group only ● For people who enjoys writing Self report vs projective tests ­ ● Self report ­ fill out survey or questionnaire with or without a investigator ● projective tests ­ designed to let a person respond to ambiguous stimuli to find hidden emotions and internal conflicts Psychobiography ­ The analysis of historically significant lives through the use of psychological theory and research Types A, B and D and cardiovascular risk ● Type A ­ Competitive, time urgent, hostile, aggressive ● Type B ­ Relaxed, One thing at a time, express feeling ● Type D ­ Have a negative outlook on live, suppress emotion ○ High risk of cardiovascular risk Psychodynamic perspectives ● Freud’s Psychoanalytic theory ● Jung’s Analytic psychology ● Adler’s Individual Psychology Psychoanalytic theory Focus:​ Unconscious 3 components of personality 1. Id ­ Desire, Pleasure 2. Superego ­ Conscience only 3. Ego ­ reality mediator between id and superego 3 levels of awareness 1. Conscious ­ Limited thought 2. Preconscious ­ trigger answer (able to know the answer without thinking) 3. Unconscious ­ imply memory, basically everything else The iceberg metaphor Defense mechanisms 1. Repression ­ want to forget 2. Projection ­ portray what you feel 3. Displacement ­ taking frustration on other living organism 4. Reaction formation ­ reaction in a different (opposite) manner 5. Regression ­ Regression back to child­like behavior 6. Rationalization ­ Think something is rational 7. Identification ­ Identify yourself as part of something else because it makes you feel important The formative years ­ the childhood years Psychosexual stages Know age range/body part focus/task/any special characteristic(s) on slide/ possible fixations of each stage 1. Oral Stage a. 0­1 yr. b. Explore everything with the mouth c. Breast feeding 2. Anal Stage a. 2­3 yr. b. Obsessed with anything to do with the rectum c. Potty training 3. Phallic Stage a. 4­5 yr. b. Focus on genital / exploring genital c. Have a “special relationship” with mother or father ­ Oedipus & Electra complex 4. Latency Stage a. 6­12yr. b. Sexually repressive 5. Genital Stage a. Puberty­on b. Sharing sexuality with others. Dream symbolism ­ sexuality concept Freudian slips ­ No innocent error while talking Analytic Psychology Focus: Spirituality ● Personal Unconscious ­ ○ Gene and other physical thing pass on ○ Memory can be passed on ● Collective Unconscious ­ Unconscious memory that is shared with the same species. (Example: divine being) ● Introversion ­ Prefer your inner life ● Extroversion ­ Prefer the outer life Individual Psychology Focus​: Superiority need ­ a driving need to be better than average ● Inferiority complex ­ is a lack of self­worth ● Compensation ­ Covers up, consciously or unconsciously, feelings Behavioral perspectives Focus: Overt behavior Operant Conditioning ● Skinner’s Operant Conditioning ­ Personality development is derived from rewards and punishment Social Learning Theory ● Bandura’s Social Learning Theory ­ Observational Learning Humanistic perspectives Focus​: Positive side of Human Nature and Free Will Person­Centered Theory ● Self­concept ● Incongruency & mental health ● Source of incongruency ○ Lack of unconditional love Self Actualization Theory ● Self actualized personality ● Fulfillment of the person’s goal. Then go and help fulfill other people's goals. Michele’s marshmallow study ­ the study on children about the impulsiveness. The conclusion of this test showed that the children will little control of their impulse to eat the marshmallow have behavioral issue while the more controlled impulse children have a more successful future. Biological perspectives Focus​: Genetics and Physiology ENP Theory ● Higher­order (largely inherited traits) ● Extroversion ● Neuroticism ● Psychoticism ● Personality structure: hierarchical ● First to show effects of personality on physiology Evolutionary Theory ● Judgment of other ● Natural Selection favors: ○ Reliability ○ Cooperative ○ Generosity Trait Perspectives ● The Big five The Big Five ● N: Neuroticism ● E: Extraversion ● O: Openness ● A: Agreeableness ­ How nice somebody is ● C: Conscientiousness ­ detailed ­ productive ­ carful Neurotransmitters and neuroticism Health/longevity and personality Obesity and personality

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Chapter 14, Problem 14-66 is Solved
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Textbook: Engineering Mechanics: Statics & Dynamics
Edition: 14
Author: Russell C. Hibbeler
ISBN: 9780133951929

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The girl has a mass of 40 kg and center of mass at G. If