homework 13 – NOORANI, ZOHEB
1
Latest unpenalized work: Feb 18 2008 Mon
day 04:00 (after this date you can not make a
perfect score). Work cuto±: Feb 19 2008, 4:00
am.
Question 1, chap 6, sect 2.
part 1 of 1
10 points
A load of 52 N attached to a spring hanging
vertically stretches the spring 3
.
3 cm. The
spring is now placed horizontally on a table
and stretched 12 cm.
What force is required to stretch it by this
amount?
Answer in units of N.
Question 2, chap 6, sect 2.
part 1 of 2
10 points
A 0
.
424 kg mass is attached to a spring with
a spring constant 118 N
/
m so that the mass
is allowed to move on a horizontal frictionless
surface. The mass is released from rest when
the spring is compressed 0
.
15 m.
Find the maximum force on the mass.
Answer in units of N.
Question 3, chap 6, sect 2.
part 2 of 2
10 points
Find the maximum acceleration.
Answer in units of m
/
s
2
.
Question 4, chap 6, sect 3.
part 1 of 2
10 points
The coe²cient of static friction between the
person and the wall is 0
.
74
.
The radius of the
cylinder is 5
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 Spring '08
 Turner
 Friction, Work, 3 m, 2 m, 2 min, N. Question

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