Oscillations 4
pdf
keyboard_arrow_up
School
University of British Columbia *
*We aren’t endorsed by this school
Course
100
Subject
Aerospace Engineering
Date
Nov 24, 2024
Type
Pages
2
Uploaded by vqphys
(c) In turbulent air the wingtip of an aircraft can vibrate vertically. To investigate this effect, the
acceleration and the vertical displacement of the wingtip are measured. Fig. 3.3 shows how
the acceleration of the wingtip varies with displacement.
displacement
/
mm
acceleration
/
m
s
–2
–
2.0
–
4.0
–
6.0
2.0
6.0
4.0
0
–
5.0
–
2.5
2.5
5.0
Fig. 3.3
(i)
Explain how Fig. 3.3 suggests that the wingtip undergoes simple harmonic motion under
the test conditions.
...........................................................................................................................................
...........................................................................................................................................
...........................................................................................................................................
.....................................................................................................................................
[2]
(ii)
Use Fig. 3.3 to determine the frequency of the vibration.
frequency = ....................................................
Hz [2]
[Total: 10]
3 (a) An object is oscillating with simple harmonic motion. Place a tick (
✓
) in the box against each true statement that applies to the acceleration of the object.
The acceleration …
… is in the opposite direction to the displacement. … is directly proportional to the amplitude squared. … increases as the displacement decreases. … increases as the speed of the object decreases. [2]
(b) The graph in Fig. 3.1 shows the variation of the velocity v
of the object with time t
.
0
0.2
0.4
0.8 0.6 1.0
1.2
–0.1
–0.05
0
0.05
0.1
t
/
s
v
/
m
s
–1
Fig. 3.1
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