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posted by  ksk on 11/5/2009 1:45:41 AM  |  status: Live  |  Earned Karma: 25

Please Help!!! Life saver

Course Textbook Chapter Problem Needs by
N/A N/A N/A N/A 11/5/2009 at 2:00:00 PM
Question Details:
Consider a block on a rough surface.
It is held against a spring (but not
attached to the spring) so that the
spring is compressed leftward 3 cm.
It is then released from rest, and
the block travels rightward, separates
from the spring after traveling
3 cm, and then eventually comes to
rest after traveling a total distance
d from where it started. The block
has a weight of 5 kg (take g = 10
m/s), the coe±cient of kinetic friction
is ¹k = :13, and the spring constant
is k = 13N/cm.
x=-3cm
x=0=xeq
d
at rest
at rest
{ Use the Work-Energy Theorem to ¯nd the distance d.
{ Use the Work-Energy Theorem to ¯nd how long it takes to come to rest.
{ Use Newton's second law to ¯nd the distance d.
{ Use Newton's second law to ¯nd how long it takes to come to rest.
Tags: Physics
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