Lab 6 - Atwoods Machine and N2 Instructions
.docx
keyboard_arrow_up
School
Cheshire High School *
*We aren’t endorsed by this school
Course
SC0366
Subject
Physics
Date
May 13, 2024
Type
docx
Pages
7
Uploaded by koushikg203
Lab 6 – Atwood’s Machine & Newtons Second Law
PHY110 Lab – General Physics Lab I
Vernier/Video LAB
Objectives 1.
Measure the acceleration of the Atwood’s Pulley System using two different methods
2.
Determine the total mass of the system by plotting the Net force vs. Acceleration
3.
To verify Newtons Second Law stating that the Net force is proportional to the acceleration 4.
Determine the friction that acts on the system
Equipment List:
Vernier Software
Atwood’s Machine – Full Video
Vernier Data Files
o
Atwood’s Machine mass diff 4g
o
Atwood’s Machine mass diff 8g
o
Atwood’s Machine mass diff 12g
o
Atwood’s Machine mass diff 16g
o
Atwood’s Machine mass diff 20g
o
Atwood’s Machine mass diff 24g
Stopwatch (easy touch-based stopwatch)
Introduction Newtons Second Law of Motion can be modeled using a system called the Atwood’s Machine (as shown in Figure 1). It consists of two masses at the end of a thin string that passes over a pulley.
Figure 1 – Atwood’s Machine Apparatus
The difference in the two masses generates a net force on the system, causing the two masses to
accelerate. According to Newtons Second Law,
F
net = m a (1)
Where m is the mass of the system in kg, a is the acceleration in m/s
2
and F
net
is the net force in Newtons,
the acceleration of the system is directly proportional to the Net force of the system. The Net Force of the
system can be derived from the free-body diagram. Lets assume that m
2
is larger than m
1
. Therefore the
resulting free-body diagram is modeled in Figure 2 where m
2
is pulling the system downward.
Figure 2 – The free-body diagram of m
1
and m
2
, assuming m
2
is pulling the system downward. T represents the tension in the
string and the bottom force is the weight, or mg of each mass. The tension of the string is the same throughout, therefore the tension T
in the free-body diagram for m
1
is
the same as the tension in the free-body diagram for m
2
. The free body diagram gives the net force for
each mass
T
−
m
1
g
=
m
1
a
and m
2
g
−
T
=
m
2
a
(2)
One can add the two equations simultaneously to eliminate the Tension variable (also unknown in the
experiment) and to combine the equations into one
m
2
g
−
m
1
g
=
m
2
a
+
m
1
a
(3)
The expression can be reduced down to
(
m
2
−
m
1
)
g
=
(
m
2
+
m
1
)
a
(4)
Written this way, the expression models Newtons Second Law. The Net Force on the left is the
difference in weight and on the right, the m
is replaced by the combined masses (
m
2
+
m
1
)
and a
remains
the net acceleration of the system. In the lab setting the masses can be measured with a triple beam
balance or scale, and the acceleration can be measured either using kinematics or through Vernier Smart
Pulley photogate measurement. The pulley will impart some friction on the system. We can rewrite
equation 4 to incorporate the friction on the system with (
m
2
−
m
1
)
g
−
f
=
(
m
2
+
m
1
)
a
(5)
The friction can be added to the right side of the equation to model a linear relationship similar to y=mx +
b. In this case, the y-axis will be the Net force, (
m
2
−
m
1
)
g
, the x-axis will be a
. This leaves the slope as
the (
m
2
+
m
1
)
or the total mass of the system and the y-intercept will represent the frictional force implied
on the system.
(
m
2
−
m
1
)
g
=
(
m
2
+
m
1
)
a
+ f (6)
The acceleration in this lab will be measured two ways. The first way is through the kinematic equation
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
Example
An experimental device imparts a force of magni-
tude F = 225 N to the front edge of the rim at A to
simulate the effect of a slam dunk. Determine the
900 mm
700 mm
F
moments of the force F about point O and about
point B. Finally, locate, from the base at 0, a point C
on the ground where the force imparts zero moment.
B
300 mm
3050 mm
arrow_forward
١٠
arrow_forward
Hi so here is a question we have and here is the answer for it, i understand everything up until the circled part i am really stuck there so if you could just use alot of words when you explain it because our professor just puts the equation in without explaining it so please explain it as much as you can because i really dont understand it i would really appreciate it.
Thank you
arrow_forward
The class I'm taking is physics for scientists and engineers!
**I just need help with part G**
I have attached the problem below! Please view both attachments before answering. If you can please explain your answer so I can fully understand. Thank you so so much!
arrow_forward
Solve all the problems
arrow_forward
Needs Complete solution don't use chat gpt or ai i definitely upvote you. Be careful Downvote for ai or chat gpt answer.
Please help! Only if you are confident you know the answer.
arrow_forward
P.
F.
DI
HP TrueVision HD
nn Site
w Technical A
AN Careers
OMail-boss
5 Texas Work
VA College X
O 8 https://www.webassign.net/web/Student/Assignment-Responses/last?dep3D28680740
NOTES
ASK YOUR TEACHER
PRACTICE ANOTHER
The figure below shows a horizontal bar, of length 4.6 m, with forces acting on it. A 30 N force acts at its left end, point O, in a
direction down and to the left, 45° below horizontal. A 25 N force acts at its center, point C, in a direction up and to the right, 30° to
the right of vertical. A 10 N force acts at the right end, in a direction down and to the right, 20° below horizontal.
25 N
30'
45°
C.
2.3 m
10 N
4.6 m-
N 0.
(a) What is the net torque (in N• m) on the bar about an axis through O perpendicular to the page?
magnitude
direction
counterclockwise
(b) What is the net torque (in N • m) on the bar about an axis through C perpendicular to the page?
magnitude
direction
counterclockwise
dy
AddNo ding ong Pre lodurrial As,
Hangli Town Donggn city,China
732006020610…
arrow_forward
inspire Physics
PRACTICE Problems
ADDITIONAL PRACTICE
20. On Earth, a scale shows that you weigh 585 N.
a. What is your mass?
b. What would the scale read on the Moon (g = 1.60 N/kg)
21. CHALLENGE Use the results from Example Problem 3 to ar
would be exerted by the scale on a person in the following s
a. The elevator moves upward at constant speed.
b. It slows at 2.0 m/s² while moving downward.
c. It speeds up at 2.0 m/s² while moving downward.
d. It moves downward at constant speed.
In what direction is the net force as the elevator slows
arrow_forward
Help
arrow_forward
I need the answer as soon as possible
arrow_forward
4
arrow_forward
INMOTION>>>
gpb.org/physics-motion Practice Problems
Date:
Work each of the following problems. SHOW ALL WORK.
1. The earth remains in orbit around the sun due to the force of gravity. How does the force of gravity exerted
by the sun on the earth compare to the force of gravity exerted by the earth on the sun?
2. Two objects exert a gravitational force of 4 N on each other.
a. If the mass of one object is doubled, what will be the new force of gravity between the two objects?
b. If both masses are doubled, what will be the new force of gravity between the objects?
c. If the masses do not change, but the distance between the objects is doubled, what will be the new force
of gravity between them?
d. If both the masses and the distance between the objects are doubled, what will be the new force of
gravity between them?
arrow_forward
wiley.com/was/ui/v2/adaptive-as
.1 Displacement
A child opens her toy bin and chooses a doll. She takes the doll to her neighbor Sally's house, which is 20 meters east of her house. She
and Sally then take the doll to their friend Sue's house, which is 25 meters further east. The children take the doll back to Sally's house
and accidentally leave it there. What is the total displacement of the doll?
2
W
S
X
O 45 m, west
O 65 m, east and west
O 25 m, west
O 20 m, east
Save for Later
F2
#
3
E
D
80
C
F3
DOO
DOD
$
11
4
R
F
F4
V
%
5
T
G
F5
B
6
Y
H
MacBook Air
F6
N
&
7
U
J
8
M
F8
K
H
9
V
O
F9
L
O
F10
P
alt
Submit Answer
?
1
F11
{
[
+ 11
I
arrow_forward
SOLVE WITHOUT ARTIFICIAL INTELLIGENCE PLEASE
BY HAND, LEGIBLE PLEASE
arrow_forward
Acceleration Connection Problems
Solve the following problems completely, show all work and equations used to get full credit. No work
will not get credit for assignment.
1. a) An asteroid with a mass of 1X1015kg approaches Earth(5.98X1024kg). If they are 250,000,000m
apart, what is the force of gravity on the asteroid?
arrow_forward
Question 2
This question is a short free-response question. Show your work for each part of the question.
Block
Submit
Person
Ice
A person pushes a large block on a horizontal ice surface in a straight line to the right with constant speed, as shown above. The mass of the block is 10 kg and frictional forces between the block and the ice are negligible. However, the block has a wide cross-sectional area such that air resistance acting on the block cannot be neglected. The
opposite is true for the person: air resistance on the person is negligible, but the person's shoes do not slip on the ice. The table shows the force exerted by the person on the block for several values of constant speed.
Force of person's push (N)
Constant speed of block (m/s) +0.05
20
1.25
40
2.51
60
3.73
80
5.00
(a) A student claims that the data show that the magnitude of the force of air resistance is proportional to the speed of the object, within experimental uncertainty. Use physics principles to explain…
arrow_forward
AR Review questions a
D Present
rrange Tools Add-ons Help
Last edit was 41 minu.
Background
Layout-
Theme
Transition
A group of students calculated the acceleration of a
box moving across the table. They did this by
measuring the mass of the box and the force applied,
and used the formula F=mxa. Students discovered
that the actual acceleration was lower than what they
had calculated. What force might account for the
slower rate of acceleration compared to what their
calculations predicted? Explain your answer.
Write your response here:
eaker notes
arrow_forward
provide the following:
1. given
2. unknown
3. equation
4. solution
5. answer
*add diagram if applicable
arrow_forward
I need help with this problem. Thank you
arrow_forward
Q3
By hand solution needed
Needed to be solved this question correctly in 30 minutes and get the thumbs up please show neat and clean work for it
Please solve Step by Step solution In the order to understand solution
arrow_forward
7. Given the graph below answer the follow-
ing questions.
a. What is the value of for this system?
b. If the frictional force is 1.5 N, what is
FN?
c. Does tripling F triple Fappled?
d. Do Fpplied and Fy act in the same
direction? Explain why or why not.
2
4
8
FN (N)
6
2.
(N)
arrow_forward
B. Exercises for Skill Subjects/Analysis Questions Using HOTS for Content Subjects
Exercise 1: Calculate me!
A 100-gram ball m1, and a 200-gram ball m2, connected by a rod with a length of 60 cm.
the mass of the rod is ignored. The axis or rotation is located at the center of the rod. What
is the momentum of inertia of the balls about the axis rotation?
Illustration:
A
Ace
m1
m2
B
arrow_forward
This is a multiple part question, please help with what you are able to, thank you so much
arrow_forward
Student Resources
ScienceFlix Schola..
answer the following questions
ScienceFlix | Schola..
mat Tools
Add-ons Help Accessibility
Last edit was 10 minutes agg
lormal text
Arial
11
BIUA
4.
C.slow down due to friction
5.
D.speed up due to momentum
4.In the example of a soccer ball rolling to a stop, friction acts as
ball's motion.
A. An outside force
that changes the
B. Momentum
C. Kinetic energy
D. A theory
5.Newton's 2nd Law of Motion describes the relationship between all of the following, except
A.Mass
B.Force
C.Velocity
D. Acceleration
6.If someone with a mass of 40 kg accelerated down a water slide at 4 m/s/s, they would hit the
water with a force of:
A.10 Newtons
B.16 Newtons
C.160 Newtons
D 16.000 Newtons
states that for every action, there is an equal and
arrow_forward
The ball is dropped vertically onto 250 incline plane at point A, the direction of rebound forms an angle of500 with the vertical. Knowing that the ball next strikes the inclined at point B.a. Determine the velocity of rebound at point A.b. Determine the maximum height and the horizontal distance (range) that the ball has attained after itrebounds at point A.c. Determine the time required for the ball to travel from point A to B.d. Determine the velocity of the ball after it strikes at point B.
arrow_forward
Roller coaster question (label on the diagram)
only information given is height of hill 1=80m, height of hill2= 70m, height of loop=35m. roller coaster must bring mass of cart safely to a stop, and give your track a length, with labelling all in the question on the diagram.
arrow_forward
Problem 2 Cart and Pulley
Apparatus Newton’s 2nd Law may be applied to a simple system consisting of a frictionless horizontal track on which a cart plus some masses on it (total mass M), that is connected by a massless string over a frictionless pulley to a mass, m, (hanger plus some mass attached)
In lab, in Activity 1, you will use a cart and track apparatus, like in the figure at right, and a hanging mass (hanger plus mass) that pulls the cart.You are to derive an equation for the acceleration of the cart. In lab, you will use this equipment setup to experimentally verify your answer. In the following steps, use the following notation:
M = total mass of cart (including contents)
m = mass of weight hanger
T = tension force in the string
a = acceleration
Applying Newton's 2nd
Law to the Cart – Pulley Apparatus
1. Complete the free-body diagram for the hanging mass (small weight hanger) for the case when it is accelerating (dropping).
2. Complete the free-body diagram…
arrow_forward
Design a pulley system where you can lift a 4000 N rock using your own weight as the input weight. Assume you have several massless and frictionless pulleys and a long rope. a.) Draw the sketch of your pulley system design.b.) Write your weight in units of Newtons.c.) Determine the tension in each segment of rope and show that the pulley system design will work.
arrow_forward
SEE MORE QUESTIONS
Recommended textbooks for you
Glencoe Physics: Principles and Problems, Student...
Physics
ISBN:9780078807213
Author:Paul W. Zitzewitz
Publisher:Glencoe/McGraw-Hill
Related Questions
- Example An experimental device imparts a force of magni- tude F = 225 N to the front edge of the rim at A to simulate the effect of a slam dunk. Determine the 900 mm 700 mm F moments of the force F about point O and about point B. Finally, locate, from the base at 0, a point C on the ground where the force imparts zero moment. B 300 mm 3050 mmarrow_forward١٠arrow_forwardHi so here is a question we have and here is the answer for it, i understand everything up until the circled part i am really stuck there so if you could just use alot of words when you explain it because our professor just puts the equation in without explaining it so please explain it as much as you can because i really dont understand it i would really appreciate it. Thank youarrow_forward
- The class I'm taking is physics for scientists and engineers! **I just need help with part G** I have attached the problem below! Please view both attachments before answering. If you can please explain your answer so I can fully understand. Thank you so so much!arrow_forwardSolve all the problemsarrow_forwardNeeds Complete solution don't use chat gpt or ai i definitely upvote you. Be careful Downvote for ai or chat gpt answer. Please help! Only if you are confident you know the answer.arrow_forward
- P. F. DI HP TrueVision HD nn Site w Technical A AN Careers OMail-boss 5 Texas Work VA College X O 8 https://www.webassign.net/web/Student/Assignment-Responses/last?dep3D28680740 NOTES ASK YOUR TEACHER PRACTICE ANOTHER The figure below shows a horizontal bar, of length 4.6 m, with forces acting on it. A 30 N force acts at its left end, point O, in a direction down and to the left, 45° below horizontal. A 25 N force acts at its center, point C, in a direction up and to the right, 30° to the right of vertical. A 10 N force acts at the right end, in a direction down and to the right, 20° below horizontal. 25 N 30' 45° C. 2.3 m 10 N 4.6 m- N 0. (a) What is the net torque (in N• m) on the bar about an axis through O perpendicular to the page? magnitude direction counterclockwise (b) What is the net torque (in N • m) on the bar about an axis through C perpendicular to the page? magnitude direction counterclockwise dy AddNo ding ong Pre lodurrial As, Hangli Town Donggn city,China 732006020610…arrow_forwardinspire Physics PRACTICE Problems ADDITIONAL PRACTICE 20. On Earth, a scale shows that you weigh 585 N. a. What is your mass? b. What would the scale read on the Moon (g = 1.60 N/kg) 21. CHALLENGE Use the results from Example Problem 3 to ar would be exerted by the scale on a person in the following s a. The elevator moves upward at constant speed. b. It slows at 2.0 m/s² while moving downward. c. It speeds up at 2.0 m/s² while moving downward. d. It moves downward at constant speed. In what direction is the net force as the elevator slowsarrow_forwardHelparrow_forward
- I need the answer as soon as possiblearrow_forward4arrow_forwardINMOTION>>> gpb.org/physics-motion Practice Problems Date: Work each of the following problems. SHOW ALL WORK. 1. The earth remains in orbit around the sun due to the force of gravity. How does the force of gravity exerted by the sun on the earth compare to the force of gravity exerted by the earth on the sun? 2. Two objects exert a gravitational force of 4 N on each other. a. If the mass of one object is doubled, what will be the new force of gravity between the two objects? b. If both masses are doubled, what will be the new force of gravity between the objects? c. If the masses do not change, but the distance between the objects is doubled, what will be the new force of gravity between them? d. If both the masses and the distance between the objects are doubled, what will be the new force of gravity between them?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Glencoe Physics: Principles and Problems, Student...PhysicsISBN:9780078807213Author:Paul W. ZitzewitzPublisher:Glencoe/McGraw-Hill
Glencoe Physics: Principles and Problems, Student...
Physics
ISBN:9780078807213
Author:Paul W. Zitzewitz
Publisher:Glencoe/McGraw-Hill