SCHOOL OF ENGINEERING
DEGREE PROGRAMMES
ASSIGNMENT 2 (INDIVIDUAL)
MARCH 2022 SEMESTER
MODULE NAME
: ENGINEERING DYNAMICS
MODULE CODE
: MEC60604
DATE
: 1 JUNE 2022
SUBMISSION DEADLINE: 22 JUNE 2022 (BEFORE 6:00 PM)
This assessment consists of FIVE (5) printed pages, inclusive of this page.
1.
Instruction to Candidates:
1. Answer ALL questions.
2. This is an open book examination, student is not allowed to transcribe directly (cut and
paste) any material from another source into their submission.
3. The Turnitin similarity for this module is 20% overall and lesser than 1% from a single
source excluding program source codes.
4. Severe disciplinary action will be taken against those caught violating assessment rules
such as colluding, plagiarizing or transcribing.
5. The final assessment answers handed in should be within 5 -12 pages in total for nonprogramming modules, with a spacing of 1.5 and a font of 12pt Times New Roman.
6. Submission link is:
https://times.taylors.edu.my/mod/turnitintooltwo/view.php?id=2136070
(Do not submit the question paper)
MLO
Question(s)
Marks
MLO2
Question 1 & 3
/ 50
MLO3
Question 2 & 4
/ 30
TOTAL
Page 1 of 5
/ 80
Question 1
A 6-kg pendulum bob moves from position 1 to position 2 in the vertical plane with a velocity
of 15 m/s when θ = 0⁰, as shown in Figure Q1.
a.
Evaluate the effect of angle θ on the cord tension.
[16 marks]
b.
Identify the initial tension in the cord.
[3 marks]
c.
Identify the angle θ when there is no tension in the cord.
[6 marks]
[Total = 25 marks]
2
1
3m
Figure Q1
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Engineering Dynamics
MEC60604
Assignment 2
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Question 2
Figure Q2 shows a robot arm that can elevate and extend simultaneously. At a given instant,
the robot arm has a constant angular velocity of 10⁰/s, 𝑙𝑙 = 0.6 m, 𝑙𝑙 ̇ = 0.3 m/s, and
𝑙𝑙 ̈ = ‒0.6 m/s2.
a.
Evaluate the velocity and acceleration of the gripped part P in radial and transverse
directions.
(7 marks)
b.
Assess the influence of angle θ on the velocity of the gripped part P in x and y
directions.
(8 marks)
[Total = 15 marks]
Figure Q2
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Engineering Dynamics
MEC60604
Assignment 2
202203
Question 3
Figure Q3 shows a 1000-kg race car, whereby point G is its centre of gravity.
a.
If the coefficient of static friction between the rear wheels and the pavement is 𝜇𝜇𝑠𝑠 = 0.4,
analyse if it is possible for the driver to lift the front wheels A (“wheely”), while the rear
wheels roll without slipping. Neglect the mass of the wheels and assume that the front
wheels are free to roll. Show the free body diagram and the kinetics diagram.
(15 marks)
b.
If all the four wheels have contact with the ground, rear wheels roll without slipping
and front wheels are free to roll, analyse the frictional force at each of the rear wheel
B and the normal force at each of the front wheel A and at each of the rear wheel B,
in order to achieve an acceleration of 𝑎𝑎 = 6 m/s2. Neglect the mass of the wheels.
Show the free body diagram and the kinetics diagram.
(10 marks)
[Total = 25 marks]
Figure Q3
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Engineering Dynamics
MEC60604
Assignment 2
202203
Question 4
Three cars travel with different velocities and accelerations on the road, as shown in
Figure Q4. Assess the velocity and acceleration of car C with respect to car A.
[Total = 15 marks]
300 m
20 m/s
5 m/s2
350 m
30 m/s
6 m/s2
Figure Q4
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Engineering Dynamics
MEC60604
Assignment 2
202203