Hooke's Law

1. The name of the scientist who formulated Hooke's Law was

• James Hooke

• Larmond Hooke

• Robert Hooke

• William Hooke

In the equation F = kx, F stands for

• Applied force

• Frictional force

• Gravitational force

• Restoring force

The constant k in F = kx is called the

• Hooke's constant

• Extension

• Spring Constant

• Force constant

Which of the following graphs MOST ACCURATELY represents a plot of a Force-Extension graph?

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Which statement MOST accurately summarizes Hooke's Law?

• The extension of any object is directly proportional to the force applied to the object

• When a force is applied to an elastic object, the object stretches by the same amount regardless of the size of the force applied

• For small deformations, the extension of an elastic object is directly proportional to the force applied to the object.

• For large deformations, the extension of an elastic object is directly proportional to the force applied to the object.

When a force of 120N causes a spring to extend by 20cm, the value of the spring constant would be

• 6Nm-1

• 60Ncm-1

• 600Nm-1

• 600Ncm-1

The force required to extend a spring with a spring constant of 50Nm-1 by 40cm is

• 12.5N

• 125N

• 2000N

• 200N

When a force of 140N is applied to a spring with a spring constant of 210Nm-1, the extension of the spring (in cm) would be

• 0.667cm

• 66.7cm

• 1.5cm

• 150cm

Based on the image shown, the gradient of the graph (and hence the spring constant of the spring represented) would be

• 5Nm-1

• 50Nm-1

• 500Nm-1

• 5000Nm-1

True or False: Hooke's law is applicable only to elastic objects:

• True

• False