soto (rrs946) – Homework 8 – Spurlock – (41003)
1
This
printout
should
have
30
questions.
Multiplechoice questions may continue on
the next column or page – find all choices
before answering.
001 (part 1 of 2) 10.0 points
A piston in an automobile engine is in simple
harmonic motion. Its amplitude of oscillation
from the equilibrium (centered) position is
±
7
.
93 cm and its mass is 1
.
092 kg.
Find the maximum velocity of the piston
when the auto engine is running at the rate of
2880 rev
/
min.
Answer in units of m
/
s.
002 (part 2 of 2) 10.0 points
Find the maximum acceleration of the piston
when the auto engine is running at this rate.
Answer in units of km
/
s
2
.
003 (part 1 of 2) 10.0 points
A spring with a spring constant of 1
.
6
×
10
2
N/m is attached to a 1.6 kg mass and then set
in motion.
What is the period of the massspring sys
tem?
Answer in units of s.
004 (part 2 of 2) 10.0 points
What is the frequency of the vibration?
Answer in units of Hz.
005
10.0 points
A 31
.
6 g mass is attached to a horizontal
spring with a spring constant of 5
.
35 N
/
m
and released from rest with an amplitude of
29
.
2 cm.
What is the velocity of the mass when it
is halfway to the equilibrium position if the
surface is frictionless?
Answer in units of m
/
s.
006
10.0 points
Having landed on a newly discovered planet,
an astronaut sets up a simple pendulum of
length 1
.
88 m and finds that it makes 309
complete oscillations in 704 s. The amplitude
of the oscillations is very small compared to
the pendulum’s length.
What is the gravitational acceleration on
the surface of this planet?
Answer in units of m
/
s
2
.
007
10.0 points
Radio waves travel at the speed of light:
3
×
10
5
km
/
s.
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 Fall '11
 HOFFMAN
 Work, Frequency, Hertz, Speed of sound

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