×
Log in to StudySoup
Get Full Access to Physics For Scientists & Engineers With Modern Physics - 4 Edition - Chapter 10 - Problem 10.53
Join StudySoup for FREE
Get Full Access to Physics For Scientists & Engineers With Modern Physics - 4 Edition - Chapter 10 - Problem 10.53

Already have an account? Login here
×
Reset your password

(Ill) A hammer thrower accelerates the hammer(mass = 7.30

Physics for Scientists & Engineers with Modern Physics | 4th Edition | ISBN: 9780131495081 | Authors: Douglas C. Giancoli ISBN: 9780131495081 132

Solution for problem 10.53 Chapter 10

Physics for Scientists & Engineers with Modern Physics | 4th Edition

  • Textbook Solutions
  • 2901 Step-by-step solutions solved by professors and subject experts
  • Get 24/7 help from StudySoup virtual teaching assistants
Physics for Scientists & Engineers with Modern Physics | 4th Edition | ISBN: 9780131495081 | Authors: Douglas C. Giancoli

Physics for Scientists & Engineers with Modern Physics | 4th Edition

4 5 1 406 Reviews
15
4
Problem 10.53

(Ill) A hammer thrower accelerates the hammer(mass = 7.30 kg) from rest within four full turns (revolutions)and releases it at a speed of 26.5 m/s. Assuming a uniform rateof increase in angular velocity and a horizontal circular path ofradius 1.20 m, calculate (a) the angular acceleration, (b) the(linear) tangential acceleration, (c) the centripetal accelerationjust before release, (d) the net force being exerted on thehammer by the athlete just before release, and (e) the angle ofthis force with respect to the radius of the circular motion.Ignore gravity.

Step-by-Step Solution:
Step 1 of 3

4/6/16 Psych Notes 4/6/16 Chapter 13: Social Psychology Social Psychology - The Study of how people influence each others’ behavior, beliefs, and attitudes. - Average number in human social groups = 150 (Dunbar, 1993) - Average number of Facebook friends = 130 Evidence of Need for Social Relationships: - Increased size and activity level of frontal cortex in humans compared to other animals - Negative effects of isolation o Social rejection registered in brain as pain in experiments - Positive effects of interaction o Increased physiological health o Social facilitation  Enhanced performance on tasks in presence of others 1 4/6/16 Attribution - Process of assigning causes to behavior - Fundamental Attribution Error o Tendency to overestimate the impact of dispositional influences on other people’s behavior  Enduring characteristics such as personality and intelligence level o Rather than situational influences  External factors such as running late, feeling stressed, or following instructions Conformity - Tendency of people to alter their behavior as a result of group pressure - Asch conformity study (Asch, 1955) o People tend to conform about 40% of the time  Example: Agree with group answer even when incorrect o Less likely to conform if at least one other person gives different answer than majority o Associated with activity in amygdala, indicating anxiety might increase conformity - Psychology of groups - Stanford prison study (Zimbardo, 1973) o “Mock” prison setup o Male participants assigned to role of prisoner or guard o Procedures to deindividualize prisoners and guards o Movie Trailer: https://www.youtube.com/watchv=3XN2X72jrFk 2 4/6/16 o Documentary on YouTube: https://www.youtube.com/watch v=L_LKzEqlPto Group Psychology - Deindividuation o Tendency of people to engage in uncharacteristic behavior when they are part of a larger group - Groupthink o Emphasis on group member agreement at the expense of critical thinking o Happens because groups tend to rely on “common knowledge” to preserve relationships o Results in no net gain of new information - Preventing Groupthink o Can be prevented by assigning a “devil’s advocate” before discussion takes place - Group Polarization o Group discussion often strengthens dominant positions held by group members - Preventing Group Polarization o Inoculation Effect  Method to increase likelihood of a person changing their mind about a belief or opinion  First introduce ideas to support belief  Allows person chance to come up with own counterarguments  Then align with counterarguments they generated 3 4/8/16 Psych Notes 4/6/16 Chapter 13: Social Psychology Aggression and prosocial behavior - Obedience - Social influences on aggression and prosocial Obedience - Adherence to instructions or commands from others - Often studies using Milgram Paradigm - Milgram Studies o Participants asked deliver “shocks” in increasing intensity to another person based on performance on a memory task o Experimenters manipulated style of authority figure o 62% of participants delivered all the way up to maximum shock o Video  https://www.youtube.com/watchv=eTX42lVDwA4 1 4/8/16 Social Influence - Bystander effect o Individuals are less likely to intervene in a situation when more people are present around them o Due to:  Relying on the reactions of others to determine our own reaction (pluralistic ignorance)  Presence of others makes each individual feel less responsible for intervening (diffusion of responsibility) - Preventing the Bystander Effect o Clearly state current situation  Example:  “I am in pain”  ‘There is a fire in aisle 2!” o Ask individuals for help, point, or make eye contact - Social Loafing o Phenomenon whereby individuals become less productive in groups o Only applicable when group has shared goal Prosocial Behavior 2 4/8/16 - Enlightenment Effect o Learning about human behavior can increase the likelihood of prosocial behavior  Example:  Helping  Intervening  Altruism - Is helping ever entirely unselfish o Increased activity in brain’s “stress regions” when witnessing others in pain  Example: Amygdala o Oxytocin and dopamine reward system activated during “helping” or prosocial behavior  Example: Shared grooming habits among romantic partners 3

Step 2 of 3

Chapter 10, Problem 10.53 is Solved
Step 3 of 3

Textbook: Physics for Scientists & Engineers with Modern Physics
Edition: 4
Author: Douglas C. Giancoli
ISBN: 9780131495081

Other solutions

People also purchased

Related chapters

Unlock Textbook Solution

Enter your email below to unlock your verified solution to:

(Ill) A hammer thrower accelerates the hammer(mass = 7.30