PHYS 2425 Fall 2009

Required Safety Contract

Vector Addition

Problems from text

free-fall data

3-57 airplane path in wind

3-83 stone thrown horizontally

3-87 field goal

3-111 relative velocity

4-22 force diag on incline

4-47 traffic light suspension forces

4-37 2eqs 2unks with F=ma

4-58 spring scale usage

4-68 two-body problem a, F in terms of F, m1, m2

4-75 two-body incline plane

4-92 general one-body on moving inclined plane

5-34 pulling box at constant velocity on rough surface

5-37 Stopping car us = 0.60

Fnet vs. accel. graph

accel. vs. mass graph

More problems in Ch.5

5-80 circular motion on table top

5-92 airplane turn

3-77 2.44s projectile R = 40m

two objects, one on inclined plane

two objects pulled

6-8 Work by spring

6-28 a, b work is area under curve

6-40 angle between vectors

6-54 power, lifting object

Problem Solving & Data Analysis

Terminal Velocity Data

Lecture in Ch.7

6-34 Mechanical Advantage inclined plane

6-38 MA of pulley system

Setting up Energy problems using conservation of energy and /////////Energy Table////////

Ball on string projected downward. Find projection speed which just gets ball to the top of its motion with no tension on the string.

Finished Ch.7 lecture. F = -dU/dx

7-27 using F = -dU/dx

7-65 Thermal Energy. Calculate speed, thermal energy created, and coefficient of sliding friction for box sliding down and along a ramp.

Problem Solving, Finished 7-44 block dropped onto vertical spring

word file of 7-44 solution

Lecture in Ch.8 Conservation of Linear Momentum

8-47

8-50

8-80 KE lost in an inelastic collision. Coefficient of Restitution.

8-90 two-dimensional collision

Continue Ch.8

8-59. cm vel., energy stored in spring at max compression during collision.

Lecture in Ch.9 Rotation

7-47

7-69

Ch.9 lecture finished.

Radius of gyration defined.

8-90 a) two-dimensional momentum conservation b) omit

Lecture in Ch.10 Angular Momentum

problems 9-67. Winch. Calculate power, torque, angular velocity, and tension in cable raising a weight.

Finish Ch.10 lecture.

9-76. Real Atwood Machine. speed, angular speed, tension, and time of descent.

9-81. Modified Real Atwood with single mass over massive cylinder pulley. acceleration, tension, speed at bottom, value when angle is 90 and cylinder is light.

Problems

Ballistic Pendulum

12-21 Ball sits in 90 degree wedge, calculate normal forces acting on it.

Calculate cg of person lying on board on top of scales.

12-23 Calculate tension in support of rigid rod and reaction forces on hinge.

11-31a calculate period of motion of planet.

Start Lecture on Ch.14 Oscillations

Ch.15 Traveling Waves

15 Waves Answers