Homework #5
Phys 2210
Due Friday, Feb 8
1. To push a 25.0 kg crate up a frictionless incline, angled at 25.0 to the horizontal, a worker exerts a force of
209 N, parallel to the incline. As the crate slides 1.50 m, how much work is done on the crate by
(a
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Homework #10
Phys 2210
Due Friday, March 22
1. A sinusoidal wave travels along a string. The time for a particular point to move from maximum displacement
to zero is 0.170 s.
(a) What is the period of the wave?
(b) What is the frequency of the wave?
(c) T
TAYL12-367-408.I
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Page 367
SYSTEMS WITH TWO OR MORE ATOMS
FPO
Chapter Chapter Chapter Chapter 12 13 14 15 Molecules Solids - Theory Solids - Applications Statistical Mechanics
PA RT III
In Part III (Chapters 12 to 15) we treat applications
Handout 1
Chapter 1 5
1 year = 365 days = 3.15 107sec
1 mile = 1609 m = 1.609 km
1 day = 24 h = 1.44 103 min = 8.64 104sec1
1 m = 39.37 in = 3.281 ft
9.80 m/sec2
1000 kg = 1 t (metric ton)
g
Vectors in 2-D: x = r cos
tan ! =
average velocity v =
!x
!t
y
Equation Sheet 3
Chapter 12: Static Equilibrium
=r F
= r F sin plus right-hand rule for direction
Conditions for static equilibrium: i = 0 and Fi = 0
i
i
Conditions for stable equilibrium in 1D:
dU
dx
=0
and
d 2U
dx 2
0
Chapter 13: Oscillations
2
fo
Equations 4
TF = 9 T c + 32
T conversion: TK = 273 + T c
5
Heat capacity: Q = m c T = C T
Two objects coming to thermo. eq: m1c1T1+ m2c2T2=0
"T
!x
!x
Conductive
heat flow: H =
, thermal resistance: R =
and " =
!
! !kA
"x
kA
k
Radiative heat transfer: P =
Names_ Date_
Activity 0: Intro to Excel A Grade Calculator
Learning Outcomes
You will learn the basics of spreadsheets while constructing a tool to calculate your
grade in this course.
Part I The Pro
EquationsforChapters611
r
r
2
momentum: p= m ;kineticenergy:K= 12 m ;angularmomentumL=rxp
potentialenergies:relationbetweenF(x)andU(x)in1D:F=dU/dx
2
spring:U= 12 kx gravitynearearth:U=mgygravityingeneral:U=GmM/r
r
GmM
NewtonsLawofGravitation: F = 2
r
r r
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Date_
Activity 3: Gravitation
Learning Outcomes
Use a spreadsheet to understand how gravitational force and potential change you
move away from a large body. Use numerical analysis to determine how you
Using Spreadsheets for Calculations and
Computational Models: Semester Overview
Objective
This semester we will be working with spreadsheets to numerically calculate solutions
and get a better understanding of graphin
Name_
Date_
Activity 1: Math Tools and an Introduction to
Spreadsheets
Learning Outcomes
You will be introduced to the basics of spreadsheets while understanding the math
tools needed for this course, including
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Date_
Activity 4: Oscillations
Learning Outcomes
Use a spreadsheet to model the position, velocity, and acceleration of an oscillating
system using Eulers method. Explore how changing the resolution of
Homework #9
Phys 2210
Due Friday, March 15
1. In the gure below, four spheres form the corners of a square whose side is 2.0 cm long. What are the magnitude
and direction of the net gravitational force from them on a central sphere with mass m5 = 250 kg?
Homework #8
Phys 2210
Due Friday, March 1
1. Two objects are moving as shown in the gure below. What is their total angular momentum about point O ?
Figure 1: For Problem 1.
2. Three particles, each of mass m, are fastened to each other and to a rotation
Homework #7
Phys 2210
Due Friday, Feb 22
1. Starting from rest at t = 0 s, a wheel undergoes a constant angular acceleration. At t = 2.0 s the angular
velocity of the wheel is 5.0 rad/s. The acceleration continues until t = 20 s, when it abruptly ceases.
Homework #5 Solutions
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Problem 10
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Problem 3
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Problem 11
Homew
Homework #1
Phys 2210
Due Friday, Jan 11
1. Calculate the number of kilometers in 20.0 mi using only the following conversion factors: 1 mi = 5280 ft, 1 ft
= 12 in, 1 in = 2.54 cm, 1 m = 100 cm, and 1 km = 1000 m.
2. Express the speed of light, 3.0 108 m/
Homework #2
Phys 2210
Due Friday, Jan 18
1. The velocity-time graph for a rabbit is shown below.
(a) Find the values of the rabbits acceleration between t = 0 s and t = 16 s.
(b) What was the rabbits displacement during this time?
(c) What is the rabbits
Homework #3
Phys 2210
Due Friday, Jan 25
1. Two horizontal forces act on a 2.0 kg chopping block that can slide over a frictionless kitchen counter, which
lies in an x-y plane. One force is F1 = (3.0+4.0) N. Find the acceleration of the chopping block in
Homework #4
Phys 2210
Due Friday, Feb 1
1. Two blocks remain in contact as they are pushed on a table with a force F = 18 N, as shown below. The mass
of block 1 is m1 = 7 kg and the mass of block 2 is m2 = 2 kg. Find the force exerted on block 2 by block
Homework #6
Phys 2210
Due Friday, Feb 15
1. How fast must an 816 kg Geo travel
(a) to have the same linear momentum as a 2650 kg Cadillac going 16 km/h, and
(b) to have the same kinetic energy?
2. In the overhead view of the gure below, a 300 g ball with
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Activity 2: Projectile Motion
Learning Outcomes
You will learn how to complete a numerical analysis of a projectile motion problem. You
will also reinforce graphing skills and how to read data