Free Printable Hooke's Law and Elastic Potential Energy

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Hooke's Law and Elastic Potential Energy

Total questions: 15

Worksheet time: 8mins

Name

Class

Date

If F is force, k is spring constant and x is extension, Hooke's Law tells us that:

F=k/x

x=Fk

k=Fx

F=kx

Hooke's Law fails when a material reaches its:

breakdown

elastic limit

end of tether

fracture stress

A stiff material has a:

high spring constant

low spring constant

spring constant of any value

spring constant which is difficult to predict

A spring extends 1.5m under load 10N. What is its spring constant?

0.15N/m

10N/m

6.7N/m

15N/m

What Quantity can you calculate from the graph and give the magnitude of that quantity.

distance 4.5 m

Force 15 N

spring constant 20 N/m

spring constant 200 N/m

A 5-newton force causes a spring to stretch 0.2 metre. What is the potential energy stored in the stretched spring?

1 J

0.5 J

0.2 J

0.1 J

At point P, _______.

the force applied to the spring is equal to its elongation

Hooke's Law ceases to be valid

the spring is can be stretched but still springs back into shape reversibly

the spring constant increases

Which quantity can be determined from this graph?

the net force is 4N

the spring is 0.4m long

the stored potential energy in this spring is 1.6 J

the spring constant is 10 N/m

Which of the following is a true statement regarding springs?

The higher the value of the spring constant, the stiffer the spring.

In Hooke's law, the force exerted by the spring acts in the same direction as displacement.

Springs are designed to provide unpredictable variations in force.

The force exerted by a spring has a quadratic relationship with the displacement form equilibrium.

10.

Which of the following springs is the stiffest?

A spring that requires a froce of 2000 N to compress it by 6.8 m.

A spring that requires a force of 4000 N to stretch it by 9.0 m.

A spring that requires a force of 8000 N to compress it by 45 m.

A spring that requires a force of 4800 N to stretch it by 14 m.

11.

A force of 20 N is applied by a mass hanging at the bottom of a spring. How heavy is the mass?

2.0 g

2.0 kg

20 g

20 kg

12.

Which statement most accurately represents Hooke's Law?

Extension of a spring is proportional to the number of coils.

Thickness of a spring wire is proportional to the force applied.

Extension of a spring is inversely proportional to the force applied.

13.

Hooke's Law describes the behaviour of which kind of material under tension?

plastic

metals only

elastic

non-metals only

14.

If extension = Stretched length - original length. What is the extension of spring D.

1mm

2mm

3mm

0mm

15.

The formula for calculating elastic potential energy (E_e) is...

2 x spring constant x extension²

1/2 x spring constant² x extension

1/2 x spring constant x extension²

1/2 x mass x extension²

100 %

Hooke's Law and Elastic Potential Energy

Total questions: 15

Worksheet time: 8mins

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