WorksheetsHooke's Law and Forces
Total questions: 15
Worksheet time: 11mins
Name
Class
Date
1.
Hooke's Law describes the behaviour of which kind of material under tension?
a)
plastic
b)
metals only
c)
elastic
d)
non-metals only
2.
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
3.
Hooke's Law fails when a material reaches its:
a)
breakdown
b)
elastic limit
c)
end of tether
d)
fracture stress
4.
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
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.
_________ is the unit of Spring Constant
a)
N
b)
N/m
c)
m
8.
The graph shows the relationship between force and extension as a spring is extended. What is another name for point A?
a)
Point A is the elastic limit
b)
Point A is the elastic summet
c)
Point A is the plastic limit
d)
Point A is the extension limit
9.
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
10.
Type the value of k in N/cm rounded to 2 SF (NO Units)
(a)
11.
How much energy is stored when the extension is 6cm? Answer in Joules - 2 SF (Do not type Unit)
(a)
12.
A force of 470 N is applied to stretch a spring which has a spring constant, k=1100 N/m. How much does the spring stretch past its free length?
a)
0.214 m
b)
2.34 m
c)
0.427 m
d)
5.17 X 10^5 m
13.
What force should be applied to compress a spring by 0.013 m if its spring constant is k = 1900 N/m?
a)
1880 N
b)
24.7 N
c)
1900 N
d)
0.127 N
14.
A playdough is often describe as
a)
brittle
b)
Elastic
c)
Plastic
d)
fun
15.
On a Force - Extension graph the Energy Stored can be found using
a)
the gradient
b)
the area under the graph
c)
the line of best fit
d)
the reading on the newton metre
100 %
