force and extension

• What law is being investigated in the experiment?

  Hooke's Law
• What is the main goal of the experiment?

  To gather data on spring extension
• What must be measured to ensure accurate results?

  Length and extension of the spring
• How should the ruler be positioned for accurate measurement?

  Zero mark level with the bottom of the spring
• What is the mass of each weight used in the experiment?

  100 g
• How is force calculated from mass in this experiment?

  Using the equation $F =$$mg$
• What value of $g$ is used in the experiment?


  $10 \text{ m/s}^2$
• What is the force exerted by each 100 g mass?

  1 Newton
• How should extension be measured?

  In meters, converting from centimeters
• What is the conversion factor from centimeters to meters?

  Divide by 100
• What is the original length of the spring when no force is applied?

  Zero extension
• What is the first extension measurement recorded?

  0.035 m
• What is the second extension measurement recorded?

  0.08 m
• What is the third extension measurement recorded?

  0.127 m
• What is the fourth extension measurement recorded?

  0.173 m
• What is the fifth extension measurement recorded?

  0.219 m
• What indicates a potential error in the experiment?

  If the spring does not return to zero
• What is plotted on the y-axis of the graph?

  Force in Newtons
• What is plotted on the x-axis of the graph?

  Extension in meters
• How is the scale for the force axis determined?

  Two large squares per Newton
• How is the scale for the extension axis determined?

  0.05 m per big square
• What is the purpose of drawing a line of best fit?

  To show the relationship between variables
• What does the intercept of the line of best fit suggest?

  Possible systematic error in measurements
• How is the gradient of the line calculated?

  Height divided by width of triangle
• What is the height of the triangle used for gradient calculation?

  3.5 Newtons
• What is the width of the triangle used for gradient calculation?

  0.165 m
• What is the calculated gradient of the line?

  21.2 Newtons per meter
• What does the gradient represent in this experiment?

  The spring constant of the spring
• What is the relationship described by Hooke's Law?

  $F =$$kx$
• What does $x$ represent in Hooke's Law?


  The extension of the spring
• What does $k$ represent in Hooke's Law?


  The spring constant
• What alternative symbol can replace $x$ in Hooke's Law?


  Lowercase $e$
• What is the aim of the investigation?

  To determine the relationship between force and extension
• What happens to a spring when a force is applied?

  It causes the spring to extend
• How does increasing the force affect the extension of a spring?

  It increases the extension of the spring
• What law is being investigated in relation to the spring's behavior?

  Hooke's law
• What are the variables in the investigation?

  • Independent variable: Applied force
  • Dependent variable: Extension of spring
  • Control variable: Same spring
• What is the independent variable in the investigation?

  Applied force
• What is the dependent variable in the investigation?

  Extension of spring
• What is the control variable in the investigation?

  Same spring