Hooke

1
Hookes LawFinding the Spring Constant

• Set the ruler so that the wire aligns with 0.
• Place different masses onto the holder and
  measure the extension of the spring.
• Plot a graph of the springs force versus the
  extension of the spring.
• Record the spring constant for each spring.
• Calculate the force required to stretch each
  spring 5.25 cm.

Email this document to me yournamehookeslab.doc
Do not over-stretch the spring!
2
Logger Pro 3.8Exploring Projectile Motion

• Instructions found on my website (Wed. Dec 2
  under IB year II)

Print the document with your graphs and answers.
Draw predictions on the back of the sheet.
3
Centripetal MotionFinding g

• Measure the flying height of the toy.
• Measure the time it takes for the toy to complete
  20 revolutions.
• Calculate and record the period of the motion.
• Plot a graph of Period (y-axis) versus Height
• Plot the graph of the log(Period) versus the
  log(height). The slope of this graph is the
  exponent n in the relation T a hn
• Plot a straightened curve and record the slope.
• Find the relationship between the slope value and
  the acceleration due to gravity. (Hint this is
  difficult start with a free body diagram and
  then find a relationship between the variables
  used in the experiment.)

Time(s) Revolutions Period (s) Height (m)

4
Going Ballistic! Finding the velocity of a bullet

• Part 1
• Measure the mass of the ball.
• Fire the ballistics pendulum.
• Measure the change in the height of the catcher.
• Calculate the horizontal velocity of the ball.
• Part 2
• Fire the ballistics pendulum so the ball hits the
  floor.
• Measure the range of the projectile.
• Measure the vertical displacement of the
  projectile.
• Calculate the horizontal velocity of the ball.

Email this document to me yournameballisitcslab.d
oc
5
Powerful LabFinding your horsepower

• Part 1 Measure the time it takes to run up a
  continuous set of stairs and the height of those
  stairs.
• Measure your mass (1kg2.2lbs)
• Find the power in your legs.
• Part 2 Measure the distance you lift your body
  while doing a push-up.
• Record the time to do x number of push-ups.
• Calculate the power of your triceps. (Assume that
  you are lifting 60 of your weight)
• Part 3 Measure the distance your lift the lower
  part of your shoulder blade while doing a sit-up.
  
• Record the time to do x number of sit-ups.
• Calculate the power of your stomach muscles.
  (Assume that you are lifting 40 of your weight

Legs Triceps Stomach
Email this document to me yournamepowerlab.doc
6
Centripetal Motion Lab

• Part A Find the relationship between Fc and
  velocity by graphing the data.
• Part B Find the relationship between velocity
  and radius. (Put velocity on the x-axis). Part
  C Find the relationship between velocity and
  mass. (mass on x- axis).
• All graphs should be straightened and the slope
  of each one compared to constants in the lab (ie
  look at the Fc equations.)
• Answer the questions on the lab sheet.
• Hand this in to me on Monday of next week.