Homework 4, Newton's laws 23-24-solutions
.pdf
keyboard_arrow_up
School
University of Texas *
*We aren’t endorsed by this school
Course
1
Subject
Physics
Date
Apr 3, 2024
Type
Pages
8
Uploaded by CommodoreThunderOwl31
levesque (aml6939) – Homework 4, Newton’s laws 23-24 – tejeda – (WilkesDPHY1
1)
1
This
print-out
should
have
24
questions.
Multiple-choice questions may continue on
the next column or page – find all choices
before answering.
You will have approximately two weeks to
complete this homework assignment. Collab-
oration on homework is encouraged.
How-
ever, you must submit your own responses,
and you may be required to show your in-
dependent work to your HS Instructor. You
are expected to access Quest daily to progress
through this homework assignment.
001(part1of2)10.0points
A book is at rest on an incline as shown
below.
A hand, in contact with the top of
the book, produces a constant force
F
hand
vertically downward.
F
hand
Book
The following figures show several attempts
at drawing free-body diagrams for the book.
Which figure has the correct directions for
each force? The magnitudes of the forces are
not necessarily drawn to scale.
1.
F
g
F
hand
F
N
F
f
2.
F
g
F
hand
F
N
F
f
3.
F
g
F
f
F
N
F
hand
4.
F
N
F
f
F
g
F
hand
5.
F
g
F
N
F
f
F
hand
6.
F
N
F
hand
F
f
F
g
7.
F
g
F
f
F
hand
F
N
levesque (aml6939) – Homework 4, Newton’s laws 23-24 – tejeda – (WilkesDPHY1
1)
2
8.
F
g
F
hand
F
f
F
N
correct
Explanation:
The normal force points perpendicular to
the surface of the inclined plane. The weight
force points down.
The
F
hand
also points
down. The friction force keeps the book from
sliding and consequently points up the incline.
002(part2of2)10.0points
For the normal force exerted on the book
by the wedge in the diagram, which force(s)
complete(s) the force
pair
for Newton’s third
law (action-reaction)?
1.
the component of gravity pointing parallel
to the surface of the incline
2.
the pull of the earth on the book
3.
the component of
F
hand
pointing perpen-
dicular to the surface of the incline
4.
the normal force exerted on the wedge by
the book
correct
5.
the pull of the book on the earth
6.
the sum of the component of gravity per-
pendicular to the surface of the incline and
the component of
F
hand
perpendicular to the
surface of the incline
7.
the component of gravity pointing per-
pendicular to the surface of the incline
Explanation:
The force that completes the third law pair
with the normal force of the wedge on the
book is the normal force of the book on the
wedge.
The “the sum of the component of gravity
perpendicular to the surface of the incline
and the component of
F
hand
perpendicular
to the surface of the incline” is equal and
opposite to the normal force, but it is not a
action-reactionpair
;
e.g.
, two forces equal and
opposite to each other.
003(part1of2)10.0points
A balloon is waiting to take off.
As seen in
the figure below, the balloon’s basket sits on
a platform which rests on the ground.
The
balloon is pulling up on the basket, but not
hard enough to lift it off the platform.
platform
basket
ground
balloon
What is the free-body diagram for the plat-
form?
Some parallel vectors are offset hori-
zontally for clarity.
1.
F
ground on plat
F
grav on plat
F
bask on plat
correct
2.
F
bal on bask
F
grav on bask
F
grav on plat
3.
F
bal on plat
F
grav on plat
4.
F
bal on plat
F
plat on ground
F
grav on plat
5.
F
plat on bask
F
plat on ground
F
grav on plat
Explanation:
levesque (aml6939) – Homework 4, Newton’s laws 23-24 – tejeda – (WilkesDPHY1
1)
3
All forces acting on the platform must be
represented. No forces acting on other objects
should be represented.
004(part2of2)10.0points
What is the free body diagram for the bas-
ket?
Again some parallel vectors are offset
horizontally for clarity.
1.
F
bal on bask
F
grav on bask
2.
F
grav on bask
F
bal on bask
F
plat on bask
correct
3.
F
bask on plat
F
bask on bal
F
grav on bask
4.
F
bask on plat
F
bask on bal
F
bal on bask
5.
F
bal on bask
F
bal on bask
F
ground on bask
Explanation:
All forces acting on the basket must be
represented. No forces acting on other objects
should be represented.
005
10.0points
You place a box weighing 214
.
7 N on an in-
clined plane that makes a 35
.
2
◦
angle with the
horizontal.
Compute the component of the gravita-
tional force acting down the inclined plane.
Answer in units of N.
Correct answer: 123
.
76 N.
Explanation:
Basicconcepts
θ
W
θ
θ
W
W
1
The component of the gravitational force
acting down the plane is the side opposite the
angle
θ
, so
W
1
=
W
sin
θ
006
10.0points
If an object is not accelerating, how many
forces act on it?
1.
2
2.
1
3.
0
4.
Unable to determine
correct
5.
3
Explanation:
If it isn’t accelerating, no net force acts
on it; you do not know how many forces are
involved.
007(part1of2)10.0points
A gust of wind blows an apple from a tree.
As the apple falls, the force of gravity on the
apple is 9.27 N downward, and the force of
the wind on the apple is 1.13 N to the right.
What is the magnitude of the net external
force on the apple?
Answer in units of N.
Correct answer: 9
.
33862 N.
Explanation:
Let :
F
y
=
-
9
.
27 N
and
F
x
= 1
.
13 N
.
Your preview ends here
Eager to read complete document? Join bartleby learn and gain access to the full version
- Access to all documents
- Unlimited textbook solutions
- 24/7 expert homework help
Related Questions
need help
arrow_forward
Needs Complete typed solution with 100 % accuracy.
arrow_forward
PLS I NEED A GOOD AND CLEAR HANDWRITTEN ANSWERS. PLS ANSWER IN DETAIL
arrow_forward
You've already resp..
Tylon Clark-Algebr. Copy of Tylon Clark.. M escribing
ons Help
Last edit was 3 minutes ago
rial
12
BIUA
三 三
1
3
5 |II 6 I
1. Students will show works for this problem to receive credits:
A 25 kg wood box is sliding across a wood surface, experiencing a coefficient (u) of
kinetic friction of 0.20. The box is experiencing an applied force of +63 Newtons. What is
the force of friction acting on the box? (Ff=u x Fn), (Fn=-Fg), (Fg%3Dmass x-9.81).
P = m x v
p= momentum
m=mass
V= velocity
Directly proportional vs Inversely Proportional:
When two variables are on different sides of the equal sign ( the equation),
-if they are both on top of the fraction or both on the bottom of the fraction-
directly proportional (Fc and m)( Fc and Vt)
-if one is on the top of the fraction, one is on the bottom - inversely proportional
(Fc and r)
When two variahles are on the same sides of the egual sign
III
arrow_forward
K https://Ims.mu.edu.sa/webapps/assessment/take/take.jsp?course_assessment_id=_22422
Acapella Extractor |... D
EgyBest: .Cn
Googlewww.google. D
Remaining Time: 34 minutes, 30 seconds.
* Question Completion Status:
A Moving to another question will save this response.
Question 2
If a bicyclist travels 30 kilometers in two hours, her average speed is:
30 km/hr
O A.
15 km/hr
O B.
60 km/hr
O C.
O D.
2 km/hr
A Moving to another question will save this response.
arrow_forward
ragdrop/dd.php?testid%31745&assignment_id%3D44020090&strand%38717&element=735.
vs. Acceleration
k are some key terms and expressions associated with the categories seen in the Venn Diagram.
re details available when you click on them. Drag and drop each item onto the proper area of the c
= sure to place it in the overlapping space."
EM BANK: Move to Bottom
A rate of change
Can be positive or negative
Change in displacement over change in
Change in velocity over change in time
time
units m/s
units m/s
Velocity
Both
Acceleration
arrow_forward
Please Attempt only if you are 100% sure , Don't submit an Ai generated solution .
I will verify the answer,If it is wrong Your Solution Will be reported.
arrow_forward
answer they attaced question
arrow_forward
answer they attaced question
arrow_forward
X Classes
• HME Assgnments OverX
HMH Ed Ouestion S of 6
Angelina Vargas-Structure x
Hbox (1) angelha vargang x
hmhoo.com/one/assessment/e/formativet.iveAssessment/
MPH Bookmanks
Angelina Vargas
S of 6
Ms. Emily buys a hat and gloves with a coupon for 30% off her entire purchase. The gloves cost $35 before the discount. Her bill before tax is $44.80
Write an equation to find the original cost of the hat, x.
Enter the correct equation in the box.
Hint
1 of 2
Don't forget to add the cost of the hat and gloves before the discount.
8.
9.
6.
Sign out
V I 1:30
arrow_forward
C Clev M Cou
Entra G mod
http
Cen Ener
G wha top Why
11 A
Shol
Pare
Cen Ex
Desi
□8. T
+
webassign.net/web/Student/Assignment-Responses/submit?pos=12&dep=29330866&tags=autosave#question4822435_12
*
Managed bookmarks b Boom Cards! - Play G what is the speed o...
R
G working man blues....
For this assignment, you submit answers by question parts. The number of submissions remaining for each question part only changes if you submit or change the answer.
Assignment Scoring
Your last submission is used for your score.
10. [0/1 Points] DETAILS
PREVIOUS ANSWERS
MY NOTES ASK YOUR TEACHER
Which of the following statements are true?
OTwo springs look alike but have different spring constants. If the same mass is suspended on each of the springs, the one which stretches the most has the lowest
spring constant.
OTwo springs look alike but have different spring constants. If the same mass is suspended on each of the springs, the one which stretches the least has the greater
spring constant.
OTwo…
arrow_forward
oherigeomts sT s016 inu orlt to roni ensupa e
eg TAF
What's More
Time to Ponder!
Direction. Reflect and make an essay about "Pressure in Everyday Life". You may
use some facts, based in your daily experiences or relate it in the emotional aspects.
You may use an extra sheet of paper for this activity.
1owene
arrow_forward
Verify Email bartleby
Xb Ask a Question | bartleby x
y! www.sunywCc.edu - Yaho X
Course Home
S An 8.00-kg block of wood X +
llege.com/course.html?courseld=D16169958&HepID=Da52ff7e49b4dfe2f223be43660b2c382#10001
k Paused
KHW13
Exercise 9.41
3 of 10
Provide Feedback
P Pearson
Copyright O 2020 Pearson Education Inc. All rights reserved. Terms of Use | Privacy Policy I Permissions Contact Us |
12:09 PM
19
11/10/2020
ere to search
arrow_forward
q12 pls ty
arrow_forward
hi please solve this question . Make this its important, i just need the answer , in depth answer not required. Please solve both the questions . Just the answers . i will rate
arrow_forward
p-2 Please I need help with this question needed very clearly and step by step explanation and NEEDED ONLY TYPED SOLUTIONS PLEASE NO HANDWRITTEN please, will be really appreciated for your help.
NEEDED ONLY TYPED SOLUTIONS.
arrow_forward
C ) its a solve question plrase type it . i cant read handwriting
arrow_forward
quency, the pendu
Can you see why this is so?
The moral of this example is that it is important to check
matical solution makes good physical sense.
For problems marked ", refer to page 520 for a hint, clue, or answer.
(4Pi–3ĵ) N,
Problems
2.1 Time-dependent force*
A 5-kg mass moves under the influence of a force F =
where t is the time in seconds (1 N = 1 newton). It starts at rest
from the origin at t = 0. Find: (a) its velocity; (b) its position; and
(c) r x v, for any later time.
M
2.2 Two blocks and string*
The two blocks M, and M2 shown in the sketch are connected by
a string of negligible mass. If the system is released from rest, find
how far block M¡ slides in time t. Neglect friction.
M2
2.3 Two blocks on table
Two blocks m, and m, are in contact on a horizontal table. A hor-
izontal force is applied to one of the blocks, as shown in the draw-
ing. If m = 2 kg, m2 = 1 kg, and F = 3 N, find the force of contact
between the two blocks.
m
2.4 Circling particle and force
Two…
arrow_forward
K Elisha Denis- Newton's 1st Law x
hq.com/web/viewer.html?state%=%7B"ids"%3A%5B"1lYio1gMYadOp5ZuyuG130MpCBn06mAHJ"%5D%24
- Earwax Build Ups.
CP CPM Home-MackinVIA
One-on-One Meetin.
Last-Minute Sports,
8AKami Schoolo.
Elisha Denis - Newton's 1st Law Activity Graphing Inertia.pdf
Roboto
16px
1.5pt
BIUS A A
X x²
Focus Question: Does the speed of a car affect its stopping distance?
Background Information: Speed limit signs are posted on nearly every road. Speed
limits vary by location and are based on different factors, such as curvature of the
road, school zones, and how heavily populated an area is. Generally, speed limits
are higher on highways and lower in areas where people live.
SPEED
LIMIT
55
Speed limits keep people safe because they keep cars from going too fast. The
faster a car is traveling, the longer it will take the car to stop. In areas where a child
might chase a ball into the road or someone may cross the street, it is important
that a driver can stop very quickly. If…
arrow_forward
A Course Materials
M Inbox (404) - dmribias@bpsu.edu x
+
A classroom.google.com/c/NDc1MTUOMjkwMTM3/m/NDgwMzk0OTUxNzcy/details
rroblem Soiving. Solve the following proplems. Show your complete solution.
FPHYO124-Worksheet2.pdf
Open with Google Docs
1. 7(t) = 4.0t²7+ 3.0ĵ + 2.0 t³km The position of a particle is (a) What is the velocity of the
particle at 0 s and at 1.0 s? (b) What is the average velocity between 0 s and 1.0s?
2. The position of a particle for t> 0 is given by 7(t) = 43.0t²7+ 7.0 t³ŋ + 5.0 t-²k m (a) What is
the velocity as a function of time? (b) What is the acceleration as a function of time? (c) What is
the particle's velocity at t = 2.0 s? (d) What is its speed at t = 1.0 s and t = 3.0 s? (e) What is the
average velocity between t = 1.0 s and t = 2.0 s?
3. A projectile is launched at an angle 30° of and lands 20 s later at the same height as it was
launched. (a) What is the initial speed of the projectile? (b) What is the maximum altitude? (c)
What is the range? (d)…
arrow_forward
Answer the following questions True or False. Show your Complete Explanations. This is all about General Physics 1 Vectors.
arrow_forward
Activity 5: Check for Understanding (5 mins)
Student Engagement (SE) Think-Pair-Share
Solve the problem.
1. You are working as an expert witness for the defense of a container ship captain whose
ship ran into a reef surrounding an island. The captain is being charged with intentionally
running the ship into the reef. In discovery, the following information is correct: The ship
was traveling at 2.5 m/s toward the reef when a mechanical failure caused the rudder to
jam in the straight-ahead position. At that point in time, the ship was 900 m from the
reef. The wind was blowing directly toward the reef and exerting a constant force of 9.00
x 10³ N on the boat in a direction toward the reef. The mass of the ship and its cargo was
5.50 x 107 kg. During the preparation for the trial, the captain claims that without control
of the direction of travel, the only choice he had was to put the engines in reverse at
maximum power, such that the total force exerted by the frictional drag force of…
arrow_forward
Session.masteringphysics.com/myct/itemView?assignmentProblemlD=135511121&offset%3Dnext
Apps (1) NRA P(4.. YouTube to MP3 Co..
phone cover for mo...
***
AGARWAL-PHY-166
arrow_forward
PRINTER VERST
Chapter 13, Problem 019
Your answer is partially correct. Try again.
At what altitude above Earth's surface would the gravitational acceleration be 4.30 m/s?? (Take the Earth's radius as 6370 km.)
Number
UnitsTkm
1788.8
the tolerance is +/-2%
Click if you would like to Show Work for this question: Open Show Work
arrow_forward
SEE MORE QUESTIONS
Recommended textbooks for you
College Physics
Physics
ISBN:9781938168000
Author:Paul Peter Urone, Roger Hinrichs
Publisher:OpenStax College
Related Questions
- You've already resp.. Tylon Clark-Algebr. Copy of Tylon Clark.. M escribing ons Help Last edit was 3 minutes ago rial 12 BIUA 三 三 1 3 5 |II 6 I 1. Students will show works for this problem to receive credits: A 25 kg wood box is sliding across a wood surface, experiencing a coefficient (u) of kinetic friction of 0.20. The box is experiencing an applied force of +63 Newtons. What is the force of friction acting on the box? (Ff=u x Fn), (Fn=-Fg), (Fg%3Dmass x-9.81). P = m x v p= momentum m=mass V= velocity Directly proportional vs Inversely Proportional: When two variables are on different sides of the equal sign ( the equation), -if they are both on top of the fraction or both on the bottom of the fraction- directly proportional (Fc and m)( Fc and Vt) -if one is on the top of the fraction, one is on the bottom - inversely proportional (Fc and r) When two variahles are on the same sides of the egual sign IIIarrow_forwardK https://Ims.mu.edu.sa/webapps/assessment/take/take.jsp?course_assessment_id=_22422 Acapella Extractor |... D EgyBest: .Cn Googlewww.google. D Remaining Time: 34 minutes, 30 seconds. * Question Completion Status: A Moving to another question will save this response. Question 2 If a bicyclist travels 30 kilometers in two hours, her average speed is: 30 km/hr O A. 15 km/hr O B. 60 km/hr O C. O D. 2 km/hr A Moving to another question will save this response.arrow_forwardragdrop/dd.php?testid%31745&assignment_id%3D44020090&strand%38717&element=735. vs. Acceleration k are some key terms and expressions associated with the categories seen in the Venn Diagram. re details available when you click on them. Drag and drop each item onto the proper area of the c = sure to place it in the overlapping space." EM BANK: Move to Bottom A rate of change Can be positive or negative Change in displacement over change in Change in velocity over change in time time units m/s units m/s Velocity Both Accelerationarrow_forward
- X Classes • HME Assgnments OverX HMH Ed Ouestion S of 6 Angelina Vargas-Structure x Hbox (1) angelha vargang x hmhoo.com/one/assessment/e/formativet.iveAssessment/ MPH Bookmanks Angelina Vargas S of 6 Ms. Emily buys a hat and gloves with a coupon for 30% off her entire purchase. The gloves cost $35 before the discount. Her bill before tax is $44.80 Write an equation to find the original cost of the hat, x. Enter the correct equation in the box. Hint 1 of 2 Don't forget to add the cost of the hat and gloves before the discount. 8. 9. 6. Sign out V I 1:30arrow_forwardC Clev M Cou Entra G mod http Cen Ener G wha top Why 11 A Shol Pare Cen Ex Desi □8. T + webassign.net/web/Student/Assignment-Responses/submit?pos=12&dep=29330866&tags=autosave#question4822435_12 * Managed bookmarks b Boom Cards! - Play G what is the speed o... R G working man blues.... For this assignment, you submit answers by question parts. The number of submissions remaining for each question part only changes if you submit or change the answer. Assignment Scoring Your last submission is used for your score. 10. [0/1 Points] DETAILS PREVIOUS ANSWERS MY NOTES ASK YOUR TEACHER Which of the following statements are true? OTwo springs look alike but have different spring constants. If the same mass is suspended on each of the springs, the one which stretches the most has the lowest spring constant. OTwo springs look alike but have different spring constants. If the same mass is suspended on each of the springs, the one which stretches the least has the greater spring constant. OTwo…arrow_forwardoherigeomts sT s016 inu orlt to roni ensupa e eg TAF What's More Time to Ponder! Direction. Reflect and make an essay about "Pressure in Everyday Life". You may use some facts, based in your daily experiences or relate it in the emotional aspects. You may use an extra sheet of paper for this activity. 1owenearrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- College PhysicsPhysicsISBN:9781938168000Author:Paul Peter Urone, Roger HinrichsPublisher:OpenStax College
College Physics
Physics
ISBN:9781938168000
Author:Paul Peter Urone, Roger Hinrichs
Publisher:OpenStax College