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Physics Paper 2
Physics Paper 2
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Subdecks (2)
Identifying the limit of proportionality
Physics Paper 2 > Physics Paper 2
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Understanding the magnetic effect of a current
Physics Paper 2 > Physics Paper 2
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Cards (154)
What does
k
k
k
represent in Hooke's Law?
Spring constant
(
N/m
)
How is the spring constant
k
k
k
calculated if a spring extends 0.2m under a 5N weight?
k
=
k =
k
=
25
N/m
25 \text{ N/m}
25
N/m
What does the equipment at the bottom of the image measure?
Masses
What happens when you stretch a spring further according to Hooke's Law?
It pulls back
harder
What does Hooke's Law state about the force applied to a spring?
It is directly proportional to its
extension
How does the force required to stretch a spring twice as far compare to the original force?
The force required to stretch the spring twice as far is 2
times
the original force
What is the relationship between the force required to stretch a spring and the amount it is stretched according to Hooke's Law?
The force required is
proportional
to the amount the spring is stretched
The
spring constant
k determines this relationship
How does the extension of a spring relate to the force applied according to Hooke's Law?
More
extension
means more force applied
How is the spring's extension measured?
Using a ruler against a
fixed
point
What is Hooke's Law?
F
= -kx
What does the spring constant
k
k
k
represent?
Force needed to stretch the spring by
1 meter
How can the relationship described by Hooke's Law be expressed mathematically?
As a
proportionality
equation
What does a higher spring constant
k
k
k
indicate about a spring?
It requires more
force
to stretch
What is the unit of the spring constant
k
k
k
?
Newton per meter
(N/m)
What is the spring constant of this graph?
50 N/m
If a spring has a spring constant
k
=
k =
k
=
25
N
/
m
25 N/m
25
N
/
m
, how much force is needed to stretch it by 1 meter?
25 N
According to the image, what is the force when the extension is 0.04 m?
2 N
According to the image, what is the extension when the force is 4 N?
0.08 m
What creates the force applied to the spring in Hooke's Law?
The
weights
(masses) applied
What type of relationship exists between force and extension?
Linear relationship
What happens to the relationship
F
=
F =
F
=
k
x
kx
k
x
when the elastic limit is exceeded?
It no longer applies
What does the spring constant k represent in Hooke's Law?
The spring constant
What is the name of the piece of equipment on the right side of the image?
Ruler
What are the variables in Hooke's Law
F
=
F =
F
=
k
x
kx
k
x
?
F
F
F
:
Force (N)
x
x
x
:
Extension (m)
k
k
k
:
Spring constant (N/m)
What is the name of the equipment at the top of the image?
Spring
What does the spring constant
k
k
k
determine?
The
steepness
of the line
What happens to extension with each additional unit of force applied?
Extension increases by a
constant
amount
What does
F
F
F
represent in Hooke's Law?
Force (N)
What is Hooke's Law?
It relates
force
to spring
displacement
What does a steeper line on the graph indicate about the spring?
The spring is stiffer
How is the spring constant
k
k
k
calculated from a weight and extension?
By dividing
force
by extension
If a spring has a spring constant of
k
=
k =
k
=
5
N/m
5 \text{ N/m}
5
N/m
, what force is required to stretch it
x
=
x =
x
=
2
m
2 \text{ m}
2
m
?
F
=
F =
F
=
−
k
x
=
-kx =
−
k
x
=
−
5
⋅
2
=
-5 \cdot 2 =
−
5
⋅
2
=
−
10
N
-10 \text{ N}
−
10
N
Why is Hooke's Law not true forever?
Because every spring has an
elastic limit
What extension did the spring experience with the 5N weight?
0.2 m
What does
x
x
x
represent in Hooke's Law?
Extension
(
m
)
What does the graph represent, and what information can be obtained from it?
Represents the relationship between
force
and
extension
.
Can determine the
spring constant
.
Shows linear behavior within the elastic limit.
What relationship does the graph depict between force and extension?
A
linear relationship
What is the formula represented by Hooke's Law?
F
=
F =
F
=
k
x
kx
k
x
What does permanent deformation mean in the context of springs?
The spring is
damaged
and won't return to shape
What does a higher
k
k
k
value indicate?
Higher stiffness of the spring
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