6A 2nd Midterm Review Section
Meng-Hao Li, Asher Davidson
1
A box of mass m = 3.0 kg is, initially motionless, on a frictionless surface inclined at
= 37 . A horizontal force is exerted on it with its magnitude F = 30 N .
(a) Draw a force diagram and lab
Name:
Section:
4/27/17
PHYSICS 6A
DISCUSSION 4 - Forces
1. Use dimensional analysis to determine if each of these expressions represents a force.
G
m1 m2
r2
(1)
where the dimensions of G are L3 M 1 T 2 , m1 and m2 are masses and r is a distance.
dv
dr
whe
Name:
Section:
5/4/17
PHYSICS 6A
DISCUSSION 5 - Applying Newtons Laws
In the system depicted below, a wedge is fixed to a table and has an inclined surface at an
angle relative to the surface of the table. There is negligible friction between the inclined
Name:
Section:
5/18/17
PHYSICS 6A
DISCUSSION 7 - TORQUE AND EQUILIBRIUM
Consider a forearm holding an object with mass mo as shown in the diagram below. The joint
at point A can be considered an immovable fulcrum and the bicep muscle attaches at point
B.
Name:
Section:
4/6/17
PHYSICS 6A
DISCUSSION 1 - DIMENSIONAL ANALYSIS
Problem 1. The American Lung Association gives the following formula for an average persons expected
lung capacity (called V ):
V = 4.1H 0.018A 2.69
where H and A are the persons height
Name:
Section:
5/24/17
PHYSICS 6A
DISCUSSION 8 - WORK AND ENERGY
Consider a skater with mass m at rest at the top of a frictionless incline. The incline makes
an angle with the ground, has vertical height of h and the length of the ramp is d.
1. Use your
Name:
Section:
4/13/17
PHYSICS 6A
DISCUSSION 2 - 1D Kinematics
Problem 1. A person is sitting in her car at a stoplight. The light turns green and she accelerates at a rate
of 2 sm2 up to the speed limit of 50 mph. Upon reaching the speed limit, she stops
Erika Medina
M4h7
Week 3 Session 1
Recap:
A vector V has x and y components: VX and VV where
. l V
Vx=Vcose Vy=Vsml9 V= VxZ+Vy2 tan6=V:
Problems: mu
1. Can you give an example of an objects motion in which a great distance is traveled but the
displacement
Physics 6A Week 2 Session 1
Recap:
x = displacement v = velocity a = acceleration
v x e a = e g'
' dt dt dtz
velocity is the derivative of displacement
acceleration is the derivative of velocity and second derivative of displacement
. _ Ax . _ A17
7 ave
:Eyika Mfdla
04(11 ll?
Week 2 Session 2
Recap:
All objects fall with the same acceleration constant: g = 9.8 m/s2
At the highest point of an objects trajectory, velocity in the y-direction is 0.
Problems:
1. A baseball pitcher throws a baseball with a spe
Physics 6A Spring 2017
Problem Set 2
Force, Newtons Laws
1. Frank the Fluffy Fly Flaps Futilely
A fluffy fly named Frank smashes into the windshield of a car when the car is driving
at some nonzero speed. Use Newtons Laws to explain why it is that the poo
Physics 6A
Practice Midterm Exam #1 Solutions
Spring 2017
READ THIS BEFORE CONTINUING
The solutions are like, super in-depth. Try to check your answers without looking at the full
solution, at least at first.
If you havent: (1) finished the practice mid
Practice Midterm Exam #1
Physics 6A
Spring 2017
READ THIS BEFORE YOU BEGIN
You are allowed to use only yourself (and your classmates) and a writing instrument on this
exam. Basically, NO CALCULATOR.
On exam day, if you finish more than 5 minutes before
Physics 6A - Spring 2017
Midterm Exam #1
READ THIS BEFORE YOU BEGIN
You are allowed to use only yourself and a writing instrument on this exam.
If you finish more than 5 minutes before the end of the exam period, please raise your
hand and a proctor wil
Physics 6A Spring 2017
Problem Set 1 - Solutions
Dimensional Analysis, Estimation, and Kinematics
Problem Group 1 - Dimensional Analysis
1.1. Recoil force of water from a hose
a. If youve ever turned on a water hose while holding the hose, then you know t
Physics 6A Spring 2017
Problem Set 1
Dimensional Analysis, Estimation, and Kinematics
Problem Group 1 - Dimensional Analysis
Motivation. Why is dimensional analysis useful?
We can get a good idea of how certain physical quantity q depends on other physic
Physics 6A Spring 2017
Midterm 1 Rubric
Problem
1a
1b
1c
2a
2b
2c
3a
3b
3c
Item
v tangent to path at each point
v increasing roughly linearly in length
a vectors drawn at angle in correct general direction
reasoning
v tangent to path at each point
v decre
AAP PLF Physics 6A
Week 2 Thursday
First, finish Tuesdays worksheet
1. Mathematically, how is velocity related to position and how is acceleration related to position and
velocity? (derivatives and integrals)
2. a) What does it mean t
AAP PLF
Physics 6A
Week 4 Thursday
Forces Continued
Friction-
Kinetic friction:
Static friction:
1. A large box (50 kg) sits on a carpet with a coefficient of static friction of 0.5, and coefficient of kinetic friction of
Name:
Section:
4/20/17
PHYSICS 6A
DISCUSSION 3 - PROJECTILE MOTION
Problem 1. A cannon at ground level shoots a cannonball at an angle above the horizontal with an initial speed vo . The cannonball achieves a maximum height of h and travels a
horizontal d
Experiment 3:
Conservation of Mechanical Energy
Nguyen Le
07/08/2015
Lab 1: Wednesday 8:30 AM
TA: Hector Garcia
Lab Partner: Tim Chen
Haoping Xu
TABLE OF CONTENTS
NO
1
2
3
4
TITLE
INTRODUCTION .
EXPERIMENTAL RESULTS AND DATA ANALYSIS .
CONCLUSION .
EXTRA
Experiment 5:
Harmonic Oscillator Spring Oscillator
Nguyen Le
07/15/2015
Lab 1: Wednesday 8:30 AM
TA: Hector Garcia
Lab Partner: Tim Chen
Haoping Xu
!
1!
TABLE OF CONTENTS
NO
1
2
3
4
!
TITLE
INTRODUCTION .
EXPERIMENTAL RESULTS AND DATA ANALYSIS .
CONCLUSI
Experiment 7:
Waves on a Vibrating String
Nguyen Le
07/22/2015
Lab 1: Wednesday 8:30 AM
TA: Hector Garcia
Lab Partner: Tim Chen
Haoping Xu
TABLE OF CONTENTS
NO
1
2
3
4
TITLE
INTRODUCTION .
EXPERIMENTAL RESULTS AND DATA ANALYSIS .
CONCLUSION .
EXTRA CREDIT
Experiment 0:
Sensor Calibration and Linear Regression
Nguyen Le
6/24/2015
Monday 8:30 AM
TA: Hector Garcia
Lab Partner: Haoping Xu
Question 2:
We have:
=
=
Since:
a and s are the functions of and
the mathematical operations involved are either multi
Experiment 4:
Momentum and Impulse
Nguyen Le
07/13/2015
Lab 1: Monday 8:30 AM
TA: Hector Garcia
Lab Partner: Tim Chen
Haoping Xu
!
1!
TABLE OF CONTENTS
NO
1
2
3
4
!
TITLE
INTRODUCTION .
EXPERIMENTAL RESULTS AND DATA ANALYSIS .
CONCLUSION .
EXTRA CREDIT .