If a force acts on an elastic object stretching the object, what kind of energy is stored within the object?
25%
Gravitational potential energy
0%
Tidal energy
0%
Chemical energy
75%
Elastic potential energy
Q.3.
Which of the following items can store elastic potential energy?
0%
A paper clip
0%
A pencil
100%
A rubber band
0%
A USB pen drive
Q.4.
How is the extension of an elastic object related to the force applied?
0%
Inversely proportional
100%
Directly proportional
0%
Dependent upon the material being extended
0%
None of the above
Q.5.
Which formula correctly states the relationship between force and extension?
0%
F = e
0%
F= 2k x e
0%
F = k x 2e
100%
F = k x e
Q.6.
What does k represent in the formula in question 5?
0%
The force on the object
0%
The extension of the object
100%
The spring constant
0%
The constant of extension
Q.7.
If a material has a spring constant of 10 N/m and is extended by 1 m, what force must have been applied to the object?
33%
5 N
67%
10 N
0%
20 N
0%
50 N
Q.8.
What is the size of the extension of an object which has a spring constant of 30 N/m when a force of 15 N is applied?
100%
0.5m
0%
1m
0%
2m
0%
10m
Q.9.
A slinky is stretched from being a length of 15 cm to a length of 2 m. One end of the slinky is affixed to a point whilst a child pulls on the other end with a force of 10 N. What is the spring constant of the slinky?
50%
5.3 N/m
0%
5.4 N/m
0%
18.5 N/m
50%
20 N/m
Q.10.
A spring is stretched to a point where, when released it does not return to its original length. What is this point called?
0%
Fracture limit
100%
Limit of proportionality
0%
Torsion limit
0%
Bohr's limit
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