WorksheetsHooke's Law
Total questions: 20
Worksheet time: 21mins
Name
Class
Date
1.
If F is force, k is spring constant and x is extension, Hooke's Law tells us that:
a)
F=k/x
b)
x=Fk
c)
k=Fx
d)
F=kx
2.
Hooke's Law fails when a material reaches its:
a)
breakdown
b)
elastic limit
c)
end of tether
d)
fracture stress
3.
A graph of extension against force for an elastic material is:
a)
A downward curve
b)
An upward curve
c)
A straight line from any point on the x and y axis
d)
A straight line from the origin
4.
A stiff material has a:
a)
high spring constant
b)
low spring constant
c)
spring constant of any value
d)
spring constant which is difficult to predict
5.
A spring has a spring constant of 5N/cm. What is its extension when loaded with 15N?
a)
4cm
b)
5cm
c)
3m
d)
3cm
6.
A spring extends 1.5m under load 10N. What is its spring constant?
a)
0.15N/m
b)
10N/m
c)
6.7N/m
d)
15N/m
7.
Which of the following springs is the stiffest?
a)
A spring that requires a froce of 2000 N to compress it by 6.8 m.
b)
A spring that requires a force of 4000 N to stretch it by 9.0 m.
c)
A spring that requires a force of 8000 N to compress it by 45 m.
d)
A spring that requires a force of 4800 N to stretch it by 14 m.
8.
What Quantity can you calculate from the graph and give the magnitude of that quantity.
a)
distance 4.5 m
b)
Force 15 N
c)
spring constant 20 N/m
d)
spring constant 200 N/m
9.
A 25,000 N Car is supported by 4 springs. If each spring is deflected by 0.040 m what is the spring constant? (Think about how much weight each spring holds up!)
a)
160,000 N /m
b)
620,000 N/m
c)
630,000 N/m
d)
120,000 N/m
10.
A net force of 430 N acts to stretch an extension spring. How far will the spring stretch if its spring constant is 700 N/m?
a)
43.9
b)
0.307 m
c)
1.63 m
d)
0.614 m
11.
A 5-newton force causes a spring to stretch 0.2 meter. What is the potential energy stored in the stretched spring?
a)
1 J
b)
0.5 J
c)
0.2 J
d)
0.1 J
12.
An unstretched spring has a length of 0.10 meters. When the spring is stretched by a force of 16 newtons, its length is increased to 0.18 meters. What is the spring constant of this spring?
a)
0.89 N/cm
b)
2.0 N/cm
c)
1.6 N/cm
d)
1.8 N/cm
13.
5,000 g = ____________ kg
a)
2
b)
50,000
c)
5
d)
10
14.
A 450 N object has a mass of _____ on earth
a)
4500 kg
b)
45 kg
c)
4.5 kg
d)
450 kg
15.
What type of force is shown inside of the picture?
a)
Tension
b)
Friction
c)
Elastic
d)
Gravitational
16.
What happens when the stretching force on an elastic material is released?
a)
The material breaks.
b)
The material remains stretched out.
c)
It does nothing
d)
The material snaps back to its original shape.
17.
Which statement most accurately represents Hooke's Law?
a)
a) Extension of a spring is proportional to the force applied.
b)
b) Extension of a spring is proportional to the number of coils.
c)
c) Extension of a spring is inversely proportional to the force applied.
d)
d) Thickness of a spring wire is proportional to the force applied.
18.
Give the units for a Force?
a)
a) J
b)
b) N
c)
c) Kg
d)
d) m
19.
Which keyword is defined as 'the amount of substance in an object'?
a)
a) Speed
b)
b) Density
c)
c) Mass
d)
d) Weight
20.
Spring constant is measured in
a)
N
b)
N/m
c)
m
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