Docsity
Log inSign up
Docsity
Prepare for your exams
Prepare for your exams

Study with the several resources on Docsity

Earn points to download
Earn points to download

Earn points by helping other students or get them with a premium plan

Guidelines and tips
Guidelines and tips
Sell on Docsity
Sell on Docsity
Log inSign up

Prepare for your exams

Study with the several resources on Docsity

Find documents

Prepare for your exams with the study notes shared by other students like you on Docsity

Search Store documents

The best documents sold by students who completed their studies

Search through all study resources
Docsity AINEW

Summarize your documents, ask them questions, convert them into quizzes and concept maps

Explore questions

Clear up your doubts by reading the answers to questions asked by your fellow students

Earn points to download

Earn points by helping other students or get them with a premium plan

Share documents
download point icon20 Points

For each uploaded document

Answer questions
download point icon5 Points

For each given answer (max 1 per day)

All the ways to get free points
Get points immediately

Choose a premium plan with all the points you need

Study Opportunities

Choose your next study program

Get in touch with the best universities in the world. Search through thousands of universities and official partners

Community

Ask the community

Ask the community for help and clear up your study doubts

University Rankings

Discover the best universities in your country according to Docsity users

Free resources

Our save-the-student-ebooks!

Download our free guides on studying techniques, anxiety management strategies, and thesis advice from Docsity tutors

From our blog

Exams and Study
Go to the blog

Exam 4 for Introductory Physics I | PHYS 1111, Exams of Physics

Clayton State UniversityPhysics

Material Type: Exam; Class: Introductory Physics I; Subject: Physics; University: Clayton State University; Term: Fall 2008;

Typology: Exams

Pre 2010

Uploaded on 08/04/2009

koofers-user-x1t
koofers-user-x1t 🇺🇸

10 documents

1 / 6

Toggle sidebar

This page cannot be seen from the preview

Don't miss anything!

bg1
Physics 1111 CRN 87207 Exam III Name
December 1, 2008
1. Check your exam before starting and verify that it has six (6) pages.
2. This is a Closed Book Exam. Calculators and the Reference Data Pamphlet (provided by the
professor) are the only aides allowed.
3. You will have at least 75 minutes to finish the exam.
4. This exam is worth 100 points.
5. Please show all work for the numerical problems. Parital credit and propagation of error is earned
for correct work. Remember, if you cannot determine a piece of information that is necessary to
answer a follow-up question, you may assume a value and continue from there and still get P.O.E.
6. If you need more work space, write on the back of the previous page, and note that you have done
so at the bottom of the current page.
7. If you have questions during the exam, please ask the professor.
Problem Number Possible Points Points Earned
Multiple Choice 20
Numerical 1 20
Numerical 2 20
Numerical 3 20
Numerical 4 20
Total 100
pf3
pf4
pf5

Partial preview of the text

Download Exam 4 for Introductory Physics I | PHYS 1111 and more Exams Physics in PDF only on Docsity!

Physics 1111 CRN 87207 Exam III Name December 1, 2008

  1. Check your exam before starting and verify that it has six (6) pages.
  2. This is a Closed Book Exam. Calculators and the Reference Data Pamphlet (provided by the professor) are the only aides allowed.
  3. You will have at least 75 minutes to finish the exam.
  4. This exam is worth 100 points.
  5. Please show all work for the numerical problems. Parital credit and propagation of error is earned for correct work. Remember, if you cannot determine a piece of information that is necessary to answer a follow-up question, you may assume a value and continue from there and still get P.O.E.
  6. If you need more work space, write on the back of the previous page, and note that you have done so at the bottom of the current page.
  7. If you have questions during the exam, please ask the professor.

Problem Number Possible Points Points Earned

Multiple Choice 20

Numerical 1 20

Numerical 2 20

Numerical 3 20

Numerical 4 20

Total 100

Multiple Choice: (Circle the best answer from the choices given.)

  1. A mass on a spring has an equation of x(t) = (0. 18 m)cos(4. 55 t). The maximum acceleration is:

(a) 0. 040 m/s^2 (b) 0. 18 m/s^2 (c). 819 m/s^2 (d) 3. 73 m/s^2

  1. A mass on a spring has its mass quadrupled and its spring constant cut in half. The frequency changes by a factor of:

(a) 2 √^12 (b) √^12 (c)

(d) 2

  1. A simple pendulum has its mass tripled and its length tripled. The time of one cycle increases by a factor of:

(a) 3 (b)

(c) 1 (d) (^13)

  1. A 2.2 meter long string is vibrated at its fifth harmonic. The linear distance from one node to an adjacent anti-node is:

(a) 1.1 m (b) .44 m (c) .22 m (d) .11 m

Circle the statements below that are false:

  1. The maximum force exerted by a mass on a spring is directly proportional to the maximum acceleration.
  2. Angular momentum is always conserved.
  3. A hoop and a cylinder of identical mass and radius are released from rest and roll down a hill from the same height. The cylinder reaches the bottom first.
  4. The angular frequency of a mass on a spring is independent of the amplitude.
  5. A string vibrating at the 4th harmonic has 4 nodes.
  6. A closed pipe vibrating at the 5th harmonic has 5 anti-nodes.
  1. A bicycle wheel (basically a hoop) of mass 2 kg and diameter 0.75 m is spinning at 42 rad/s, and is held by a person standing at rest on a massless, frictionless turn-table. As viewed from above, the wheel spins clockwise. The person has a moment of inertia of 8 kgm^2. The person flips the wheel over. SHOW ALL WORK

(a) Find the initial angular momentum of the wheel, ~L.

(b) What final angular velocity does the person have? (Include clockwise or counter-clockwise.)

(c) How much work is required for the person to flip the wheel?

  1. A platform is supported by two posts. The posts will buckle if the force in them exceeds 20000 N. The platform has a mass of 20 kg and is 5 meters long. Two masons each of mass 85 kg stand on it, one located 1.2 meters from the left, and one 0.4 meters from the right. A barrel of mortar of mass 45 kg is positioned 2.9 meters from the right. Bricks, each of mass 2 kg are then stacked in the middle.

(a) How many bricks will it take to break the platform, and which support breaks first? SHOW ALL WORK

(b) What is the force in the other support when the platform breaks? SHOW ALL WORK