7. Springs

What is the relationship between force and extension in a spring experiment?

• Non-linear
• Linear
• Curved
• Bent

What is the elastic limit of a spring?

• The limit at which a spring breaks

• The limit at which a spring stretches the most

• The limit at which a spring stops stretching

• The limit at which a spring compresses the most

• None of the above

What is the Bull Worker machine used for?

• To measure the strength of a spring
• To stretch a rubber band
• To exercise muscles
• To compress a spring

Which of the following statements about rubber bands is true?

• Rubber bands give a linear graph

• Rubber bands don't stretch before stopping

• Rubber bands compress under force

• Rubber bands don't obey Hooke's law

• Rubber bands do not give a straight line graph

What happens to a spring when force is reduced?

• The spring expands back to its original shape
• The spring compresses even more
• The spring remains the same length
• The spring stops functioning

What does the spring constant measure?

• The thickness of the spring

• The length of the spring

• The width of the spring

• The strength of the spring

Which spring stores the most energy?

• Spring A

• Spring B

• Spring C

• Spring D

What formula is used to calculate the elastic potential energy of a spring?

• 2ke²
• ke
• ½ke
• ½ke²

What is the unit used to measure force required to stretch a spring by one meter?

• Newtons
• Joules
• Meters
• Kilograms

Which statement about the Bull Worker machine is correct?

• It is an example of a spring with elastic properties that obeys Hooke's law

• It is used for muscle exercise by pushing the ends inwards

• It measures the strength of the spring

• It compresses a spring