no.41 Fsmax-98.4 11. You are pushing a 2.3-kg crate across the floor with a force of 9.5 N. If the coefficient of kinetic frictio between the crate and the floor is 0.32, what is the frictional force between the crate and the floor? Justify your answer. 12. An experiment was performed where a 123-N block resting on a horizontal table was pulled by a string with an increasing amount of force. The figure shows a graph of the frictional force exerted on the block v the horizontal force pulling on the block. ƒ(N) z (a) According to the graph, what in the maximum static friction between the block and the table? 75N 75.0 50.0 A

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friction: 41
Fsmax=98.4
11. You are pushing a 2.3-kg crate across the floor with a force of 9.5 N. If the coefficient of kinetic friction
between the crate and the floor is 0.32, what is the frictional force between the crate and the floor? Justify
your answer.
12. An experiment was performed where a 123-N block resting on a horizontal table was pulled by a string
with an increasing amount of force. The figure shows a graph of the frictional force exerted on the block vs
the horizontal force pulling on the block.
f(N)
(a) According to the graph, what in the maximum
static friction between the block and the table? 75N
Static
(b) Use values from the graph to find the
coefficient of static friction between the block,
and the table. Justify your answer. 75N=Ns X123
123
[23
061 = N₂
75.0
50.0
25.0
0
(f) Supr
tor
(c) According to the graph, how much kinetic friction was there between the block and the table?
tx=NK • FN
- PO
25.0 50.0 75.0 100.0 125.0 150.0
(d) Use values from the graph to determine the coefficient of kinetic friction between the block and the t
Justify your answer.
ond 123-N block was placed on
ock, and the experiment was repeated.
e graph of frictional force vs. the horizontal
look like, including values for maximum
riction and kinetic placed appropriately on the graph.
the block started from rest and was pulled with 51.0 N of force, how much friction would there be
etween the block and the table? Justify your answer.
Transcribed Image Text:friction: 41 Fsmax=98.4 11. You are pushing a 2.3-kg crate across the floor with a force of 9.5 N. If the coefficient of kinetic friction between the crate and the floor is 0.32, what is the frictional force between the crate and the floor? Justify your answer. 12. An experiment was performed where a 123-N block resting on a horizontal table was pulled by a string with an increasing amount of force. The figure shows a graph of the frictional force exerted on the block vs the horizontal force pulling on the block. f(N) (a) According to the graph, what in the maximum static friction between the block and the table? 75N Static (b) Use values from the graph to find the coefficient of static friction between the block, and the table. Justify your answer. 75N=Ns X123 123 [23 061 = N₂ 75.0 50.0 25.0 0 (f) Supr tor (c) According to the graph, how much kinetic friction was there between the block and the table? tx=NK • FN - PO 25.0 50.0 75.0 100.0 125.0 150.0 (d) Use values from the graph to determine the coefficient of kinetic friction between the block and the t Justify your answer. ond 123-N block was placed on ock, and the experiment was repeated. e graph of frictional force vs. the horizontal look like, including values for maximum riction and kinetic placed appropriately on the graph. the block started from rest and was pulled with 51.0 N of force, how much friction would there be etween the block and the table? Justify your answer.
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