LAB
FACULTY OF MECHANICAL AND 1
MANUFACTURING ENGINEERING
TECHNOLOGY
UNIVERSITI TEKNIKAL MALAYSIA MELAKA
BMMA 1333
STATICS
LAB SHEET 1
EQUILIBRIUM OF FORCES FOR 3 POINT LOAD
Learning
Outcome
(LO):
Program
Outcome:
LO2
Construct statics experiments to recognize the
engineering mechanics of statics principles.
PO4
Conduct investigations of broadly-defined
problems;locate, search and select relevant data
from codes, data bases and literature, design and
conduct experiments to provide valid
Synopsis:
conclusions.
This lab activity will enrich students’ knowledge on static.
Students are exposed to the concept of equilibrium of
Related
Lecture’s
Topic:
Prepared
by:
Approved
by
LM/SLM/HO
D
forces for 3 point load.
1. Force vectors, vector operations & addition coplanar
forces
2. Equilibrium of a particle, the free-body diagram &
coplanar force systems
Ts Mohammad Khalid Bin Wahid
Dat 26 October 2020
e:
Dat
e
QMS : REVISION RECORDS
Revisio
n No
Description
Date
(DD/MM/YY
)
STUDENT’S NAME
Prepared by :
Approved by
LM/SLM/HOD:
MATRIX NO:
S1.
S2.
S3.
S4.
S5.
PROGRAMME
YEAR
INSTRUCTION
1. Laboratory Report shall be in ENGLISH .
2. Submit your report ONCE only in a SINGLE file.
3. Submit your report ONLINE.
4. This lab report/activity accounts for 5% of the total marks for the course.
1.0
INTRODUCTION / THEORY
INTRODUCTION
This lab work topic is on the equilibrium of forces for 3 point load. The
data of the calculated angle (theory) and measured angle
(experiment) will be compared.
OBJECTIVES
1. To investigate the conditions required to achieve static equilibrium.
2. To prove the force calculation method using the geometrical method and
resolution of forces method.
3. To compare experimentally obtained results with theoretical
calculations.
PART A: THEORETICAL WORK
TASK 1: FIND THE THEORIES
The theory related to this experiment are:
1. Calculation of equilibrium of force using the geometrical methods which
are triangle method and parallelogram law.
2. The calculation for force equilibrium using the resolution of forces
method.
3. Method and equation to calculate random error and systematic error.
*Please refer to lecture note.
TASK 1: Write the related theory here
TASK 2: DRAW THE FREE BODY DIAGRAM
The experiment setup is shown in Figure 1 below. Both weight m 1 and
weight m2 are 250g. Therefore, the angle θ1 is equal to angle θ2 .
Ignore the weight and friction at the pulleys and cord. Draw the FBD at
point A in the box below.
Figure 1: Experiment Setup
TASK 2: Draw the FBD here:
TASK 3: Derive the equations and calculate the angles
1. Base on the FBD above, derive the equation of angle θ1 and angle
θ2 .
2. Record the calculated in Table 1. Start the calculation with 50 g (m 3)
Calculate for five different weight in increment order.
TASK 3: Derive the equation here
TASK 3: Record your calculations in Table 1
Table 1: Theoretical data
Load 3, m3 (g)
Angle 1, θ1 (°)
Angle 2, θ2 (°)
PART B: EXPERIMENTAL WORK
TASK 4: List of Equipment
The list of equipment is illustrated in Figure 2 as followed:1.
2.
3.
6.
LS-13101 Equilibrium of Forces Apparatus
Magnetic Pulley x 2
Magnetic protractor x 1
Weight hanger and set of weights (500g) x 3
Figure 2: LS13101 Equiplibrium of Forces Apparatus LEGEND
A - Mounting Board, B – Protractor, C - Pulley with Magnetic Base, D
– Weight
2.0 WORK PROCESS/ PROCEDURES/ METHODOLOGY
TASK 5: WRITE THE PROCEDURE OF EXPERIMENT
Figure 1 3-point load experimental setup
3.0 RESULTS
TASK 6: Record the experiment data in Table 2
Load 1, m1 = ________
Load 2, m2 = ________
Table 2: Experiment data
Load 3, m3
(g)
Angle 1, θ1 (°)
Angle 2, θ2 (°)
TASK 7: Compare theory values with experiment values
Compare calculated values with the one measured from the experiment.
Calculate the error between both results.
TASK 7: Show the calculation sample of error
TASK 7: Record the error analysis here in Table 3
Table 3: Percentage error
Load 3, m3
(g)
Angle 1, θ1 error
(%)
Angle 2, θ2 error
(%)
4.0 DISCUSSION
TASK 8: DISCUSSION
The discussion will be base on the objectives, theoretical values,
experimental values and error calculation. Please including graph in the
discussion.What is the relation between theory and experiment? Please
including graph in the discussion.What is the relation between theory
and experiment?
5.0 CONCLUSION
TASK 9: CONCLUSION
Make a general statement from your result. Please refer to the
objectives as a guide.
TASK 9: Write the conclusion here
6.0 REFERENCES / OTHERS
ASSESSMENT CRITERIA:
Your response to each task will be graded separately based on the checklist
attached. To obtain maximum marks, ensure that your response addresses
each of the tasks in the question accordingly.
Assessment checklist for Lab Activity
Assessment tasks
Mark allocation
LO
PO
Procedure: Ability to understand
the procedure from video
demonstration and write the
procedure completely.
Work Process: Ability to process
raw given data and correlate
with video demonstration
10
LO3
PO4
20
LO3
PO4
P4 – Mechanism
30
LO3
PO5
P4 – Mechanism
30
LO3
PO5
P4 –
Mechanism
10
LO3
PO4
P2 – Set
Outcome (Results):
Ability to display data in
correct figure and/or table format.
2)
Ability to perform calculation for statics analysis
1)
Outcome (Discussion & Conclusion):
1)
Ability to interpret statics
data and trend correctly.
C/P/A level
P3 –
Guided
response
2)
Ability to provide observation and comments related to
the interpretation.
Discipline
TOTAL
100
SPECIFIC INSTRUCTION
1. Answer in ENGLISH.
2. Must include list of references.
3. Submit the lab assessment ONCE only in a SINGLE file.
4. Student will be given until 72 hours after the lab session to submit the report.
ZERO mark will be given after the late submission dateline.
5. This lab assessment accounts for 5% of the total marks for the course.
6.
APPENDIX:
.
FAKULTI TEKNOLOGI KEJURUTERAAN
MEKANIKAL DAN PEMBUATAN
UNIVERSITI TEKNIKAL MALAYSIA MELAKA
BMMA 1333
STATICS ( STATIK)
LAB 1
EQUILIBRIUM OF FORCES FOR 3 POINT LOAD
INSTRUCTOR’S
NAME
Dr Ridhwan Bin Jumaidin
STUDENT’S NAME
MATRIX NO:
S1.
S2.
S3.
S4.
S5.
ASSESSEMENT RUBRICS
ASSESSMENT TASK/ITEMS
1
.
2
.
3
.
4
.
5
.
MARK
ALLOCATI
ON
Procedure: Ability to understand the
procedure from video demonstration
and write the procedure completely.
Work Process: Ability to process raw
given data and correlate with video
demonstration
Outcome (Results):
3)
Ability to display data in correct
figure and/or table format.
4)
Ability to perform calculation for
statics analysis
Outcome (Discussion & Conclusion):
1)
Ability to interpret statics data
and trend correctly.
2)
Ability to provide observation and
comments related to the interpretation.
Discipline
10
TOTAL MARKS
100
20
30
30
10
GIVEN MARKS
S1
S2
S3
S4
S5
Approved By: ………………………………………………..…..
(Instructor’s Signature & Stamp)
Date: …………………………………………….........
Very
Weak
0
Item
Descript
ion
Proce
dure
Ability to
understa
nd the
procedur
e from
video
demonstr
ation and
write the
procedur
e
completel
y
Unable to
identify
procedure
s from
video
demonstra
tion and
totally
wrong
Work
Proce
ss
Ability to
process
the raw
given
data and
correlate
with
video
demonstr
ation
Show
results
(Simulati
on and/or
Hardware
)
Modest
2
Good
3
Excellent
4
Major
written
procedures
are missing
from video
demonstrati
on and
incorrect
Some
written
procedures
are
missing
from video
demonstra
tion but
acceptable
All
procedures
are good
written
stated from
video
demonstrat
ion but
could still
be
improved
All
procedure
s are well
written
completel
y from
video
demonstr
ation
without
missing
Unable to
process
the raw
given data
and fail to
correlate
with video
demonstra
tion
Minimum
ability to
process the
raw given
data and
incorrect
correlate
with video
demonstrati
on
Able to
process
the raw
given data
and
correlate
with video
demonstra
tion but
still
incomplete
Most of the
raw given
data are
processed
and
correlate
with video
demonstrat
ion
correctly
All of the
raw given
data are
processed
and
correlate
with video
demonstr
ation
perfectly
No record
of results
at all in
any form.
Data,
figures,
graphs,
tables,
diagrams,
contain
errors or are
poorly
constructed,
have
missing
titles,
captions,
labeled or
numbers,
units
missing or
incorrect,
etc.
Most data,
figures,
graphs,
tables,
diagram
are
recorded,
some
labeled
still
missing
some
important
or required
features
All data,
figures,
graphs,
tables,
diagram,
are
correctly
drawn,
and
labeled but
some have
minor
problems
or could
still be
improved
All data,
figures,
graphs,
tables,
diagrams
are
correctly
drawn,
are
numbered
, are
labeled
and
contain
titles/capt
ions.
Some of
the results
have been
correctly
interpreted
and
discussed;
understan
ding of
Almost all
of the
results
have been
correctly
interpreted
and
discussed.
Observatio
All
important
trends
and data
compariso
ns have
been
interprete
d
Outco
me
No
interpretat
Explain
ion of
purpose trends and
of
compariso
experime n of data,
nt
observatio
n and
conclusion
Weak
1
Incomplete
or incorrect
interpretatio
n of trends
and
comparison
of data,
observation
and
15
indicating
a lack of
understan
ding of
results.
Ability to
obey the
punctuali
Discipl
ty and
ine
due date
submissio
n
conclusion
indicating a
lack of
understandi
ng of
results.
Late
report
Late online
submissio lab login
n
16
correctly
and
results is
discussed.
still
n and
Understan
evident,
comments
ding of
observatio are good.
results is
n and
Requires
conveyed
comments only minor
through
are
improveme
observati
acceptable nts.
on and
.
comment
s.
Conform
Conform to Conform to
to all
all criteria all criteria
criteria
but
and
and active
passive in workable in
in online
online lab online lab
lab
activities
activities
activities