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(with spring compressed amount
x
= 0.200 m) is given by
h
1
= (
D
+
x
) sin
θ
, where
37
=°
.
(a) Energy conservation leads to
22
11
2 2
2
0()
s
i
n
s
i
n
K
U
K
U
mg D
x
kx
mv
mgD
θθ
+=+
¡
++
+
=+
which yields, using the data
m
= 2.00 kg and
k
= 170N/m,
vg
x
k
x
m
2
2
4
0
=
sin
.
ms
.
(b) In this case, energy conservation leads to
33
3
s
i
n
0
KU KU
mg D x
kx
mv
+
which yields
2
3
2(
)
s
i
n
/
4
.
1
9
m
/
s
.
D
x
k
x
m
=++=
33. All heights
h
are measured from the lower end of the incline (which is our reference
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This note was uploaded on 05/17/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.
 Spring '08
 Any
 Physics, Energy, Potential Energy

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