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College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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85. You are helping a friend move, and you need to load
a 2.65 X 102 kg box of books. You slide the box
ramp, which has an incline of 30.0° and a coefficient
of static friction of 0.45. You apply the force on the
box at an angle of 39.0° with respect to the ramp.
(2.4) K/U TI A
S).
up
a
to
(a) Calculate the minimum force needed to slide the
box
up
the
ramp.
(b) Now you want to stop halfway up the ramp.
What coefficient of static friction must exist
between the box and the ramp for the box to
stay in place?
ger with a mass of 56 kg. (3.1) KU TI A
87. Suppose Earth turned with a greater rotation speed.
Determine what the period of rotation, in hours, must
8888888
EL-531XT
ADVANCED D.A.L.
OFF
ON/C
HOME
CA
MÓDE
2nd F
STAT VAR
INS
ALPHA
SET UP
DEL
arc hypNOT sin'AND cos OR tan'XOR DRG►XNOR
hyp sin
cos
tan
B x-l c 3 D 10* E ex
X2
X3
log
d/c DEG
Exp
ab
D°M'S
RCL
STO
RANDOM
-re sy -xy oy
(x,y)
8.
9.
n!
nCr sx nPr ox HEX c BIN r
% Exy
3"
Transcribed Image Text:4,
85. You are helping a friend move, and you need to load
a 2.65 X 102 kg box of books. You slide the box
ramp, which has an incline of 30.0° and a coefficient
of static friction of 0.45. You apply the force on the
box at an angle of 39.0° with respect to the ramp.
(2.4) K/U TI A
S).
up
a
to
(a) Calculate the minimum force needed to slide the
box
up
the
ramp.
(b) Now you want to stop halfway up the ramp.
What coefficient of static friction must exist
between the box and the ramp for the box to
stay in place?
ger with a mass of 56 kg. (3.1) KU TI A
87. Suppose Earth turned with a greater rotation speed.
Determine what the period of rotation, in hours, must
8888888
EL-531XT
ADVANCED D.A.L.
OFF
ON/C
HOME
CA
MÓDE
2nd F
STAT VAR
INS
ALPHA
SET UP
DEL
arc hypNOT sin'AND cos OR tan'XOR DRG►XNOR
hyp sin
cos
tan
B x-l c 3 D 10* E ex
X2
X3
log
d/c DEG
Exp
ab
D°M'S
RCL
STO
RANDOM
-re sy -xy oy
(x,y)
8.
9.
n!
nCr sx nPr ox HEX c BIN r
% Exy
3
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